Software Defined Radio makes wireless communications easier, more efficient, and more reliable. This book bridges the gap between academic research and practical implementation. When beginning a project, practicing engineers, technical managers, and graduate students can save countless hours by considering the concepts presented in these pages. The author covers the myriad options and trade-offs available when selecting an appropriate hardware architecture. As demonstrated here, the choice between hardware- and software-centric architecture can mean the difference between meeting an aggressive schedule and bogging down in endless design iterations. Because of the author’s experience overseeing dozens of failed and successful developments, he is able to present many real-life examples. Some of the key concepts covered are: Choosing the right architecture for the market – laboratory, military, or commercial, Hardware platforms – FPGAs, GPPs, specialized and hybrid devices, Standardization efforts to ensure interoperability and portabilitym State-of-the-art components for radio frequency, mixed-signal, and baseband processing. The text requires only minimal knowledge of wireless communications; whenever possible, qualitative arguments are used instead of equations. An appendix provides a quick overview of wireless communications and introduces most of the concepts the readers will need to take advantage of the material. An essential introduction to SDR, this book is sure to be an invaluable addition to any technical bookshelf.
This paper aims to demonstrate the feasibility of implementation of a pulsed radar system using commercially available Software Defined Radio (SDR). A low cost functional system is implemented and described using minimal hardware external to the SDR. The system is realized with an Ettus Research B200-Mini and all control and signal processing software is achieved in C++. The signal processing techniques and hardware implementation are described in detail and the system performance is evaluated.
If you’re a mobile communications engineer considering software radio solutions, this practical resource is essential reading. It covers systems design and partitioning all the way from the antenna to the management and control software. Various options for hardware are provided including a look at current and state of the art silicon technologies such as A/D & D/A's, DSP's, FPGA’s, RCP’s, ACM’s & digital frequency up/down-converters.
In this chapter, we propose a novel design of scalable and real-time data acquisition software architecture for software-defined radio (SDR) using universal software radio peripheral (USRP). The software has been designed and tested in multi-thread model, using LabVIEW, which guarantees real-time performance and efficiency. With the help of this design, we have been able to improve the stability of the system besides providing a reconfigurable and flexible architecture. Wireless transfer of sensitive data using communication is not a very safe option. In this chapter, we aim to provide a safe and private wireless transmission between two terminals using the SDR approach and verifying the results in real-world environment with the use of USRP. The novel design being presented here can be used to transfer (random data, text or an image) encoded with different forward error correction (FEC) codes, which is then verified at the receiving terminal and then decoded accordingly to produce the desired result.
"This unique resource provides you with a practical approach to quickly learning the software-defined radio concepts you need to know for your work in the field. By prototyping and evaluating actual digital communication systems capable of performing "over-the-air" wireless data transmission and reception, this volume helps you attain a first-hand understanding of critical design trade-offs and issues. Moreover you gain a sense of the actual "real-world" operational behavior of these systems. With the purchase of the book, you gain access to several ready-made Simulink experiments at the publisher's website. This collection of laboratory experiments, along with several examples, enables you to successfully implement the designs discussed the book in a short period of time. These files can be executed using MATLAB version R2011b or later. "
Software defined radio (SDR) is one of the most important topics of research, and indeed development, in the area of mobile and personal communications. SDR is viewed as an enabler of global roaming and as a unique platform for the rapid introduction of new services into existing live networks. It therefore promises mobile communication networks a major increase in flexibility and capability. SDR brings together two key technologies of the last decade - digital radio and downloadable software. It encompasses not only reconfiguration of the air interface parameters of handset and basestation products but also the whole mobile network, to facilitate the dynamic introduction of new functionality and mass-customised applications to the user's terminal, post-purchase. This edited book, contributed by internationally respected researchers and industry practitioners, describes the current technological status of radio frequency design, data conversion, reconfigurable signal processing hardware, and software issues at all levels of the protocol stack and network. The book provides a holistic treatment of SDR addressing the full breadth of relevant technologies - radio frequency design, signal processing and software - at all levels. As such it provides a solid grounding for a new generation of wireless engineers for whom radio design in future will assume dynamic flexibility as a given. In particular it explores * The unique demands of SDR upon the RF subsystem and their implications for front end design methodologies * The recent concepts of the 'digital front end' and 'parametrization' * The role and key influence of data conversion technologies and devices within software radio, essential to robust product design * The evolution of signal processing technologies, describing new architectural approaches * Requirements and options for software download * Advances in 'soft' protocols and 'on-the-fly' software reconfiguration * Management of terminal reconfiguration and its network implications * The concepts of the waveform description language The book also includes coverage of * Potential breakthrough technologies, such as superconducting RSFQ technology and the possible future role of MEMS in RF circuitry * Competing approaches, eg all-software radios implemented on commodity computing vs advanced processing architectures that dynamically optimise their configuration to match the algorithm requirements at a point in time The book opens with an introductory chapter by Stephen Blust, Chair of the ITU-R WP8F Committee and Chair of the SDR Forum presenting a framework for SDR, in terms of definitions, evolutionary perspectives, introductory timescales and regulation. Suitable for today's engineers, technical staff and researchers within the wireless industry, the book will also appeal to marketing and commercial managers who need to understand the basics and potential of the technology for future product development. Its balance of industrial and academic contributors also makes it suitable as a text for graduate and post-graduate courses aiming to prepare the next generation of wireless engineers.
Software Defined Radio (SDR) technology is commonly advocated for waveform and frequency-agile radios. It works well for simple signals and limited bandwidths, less so for complex broadband waveforms. Whether these difficulties reflect theoretical limits or design choices was unknown since few quantified limits exist. Using literature surveys and analysis this report explores fundamental limits to SDR bandwidth and waveform complexity, design trade-offs, closeness of current technology to these limits, and future trends. For fixed front ends, SDR bandwidth is limited by analog-to-digital converter (ADC) bandwidth, dynamic range, and aperture jitter. The last dominates ADC fabrication limitations and GSM-like dynamic range for 2.5 GHz digitized bandwidths is theoretically impossible - not a fabrication limitation. Flexible front-ends are important as 2nd-order products limit practical instantaneous bandwidth to less than an octave. Increasing parallelism should improve processor performance until 2025, reaching a limit of 15 nanowatts per million multiply-and-accumulate operations per second. Multicore processors will alleviate latency.
One target for research and development, software defined radio (SDR), reduces the cost of ongoing revisions and improvements to communications technology. SDR depends on the features of reconfigurable computing devices such as field programmable gate arrays (FPGAs). Tools and techniques are required to develop efficient FPGA based SDRs. This thesis examines the use of Ethernet and JTAG in SDR, and a continuous 4-level frequency modulation (C4FM) FPGA solution. A simple user datagram protocol implementation is used to provide a data bridge between the FPGA and workstation. Applications of the Ethernet system are discussed such as measuring bit-error rate, signal generation, and synchronous signal capturing. Along with the C4FM implementation, resource saving techniques are demonstrated for symmetrical FIR filters and moving averages. An innovative application of JTAG is discussed along with the tools developed to make it possible.
This authoritative book gives you new perspective on the RF and analog hardware and systems design aspects of software defined radio. It delves into the architecture of transmitters and receivers that make software-defined radio a reality. Covering both the practical aspects and underpinnings of these architectures, the book details all key RF and analog baseband components and sub-systems, from the converters that interface with DSPs and ASICs through to the duplexer feeding the antenna. It enables you to select the right technique for any application by providing alternatives for implementing the main system components.
This is the first book to describe most of the issues involved in the transition from a single standard to a Software Radio based wireless terminal. The book is both a technology tutorial for beginners as well as a starting point for technical professionals in the communication and IC design industry who are approaching the design of a Software Defined Radio. A complete overview of the actual state-of-art for reconfigurable transceivers is given in detail.
What type of wave is made up of sine waves of a given fundamental frequency plus all its harmonics? When an engineer or scientist needs to design a new radio should one or one be thinking SDR or HDR? What type of CRT deflection is better when high-frequency waves are to be displayed on the screen? Which of the filter bandwidths would be a good choice for use in a SSB radiotelephone transmitter? Tropospheric propagation of microwave signals often occurs along what weather related structure? Defining, designing, creating, and implementing a process to solve a challenge or meet an objective is the most valuable role... In EVERY group, company, organization and department. Unless you are talking a one-time, single-use project, there should be a process. Whether that process is managed and implemented by humans, AI, or a combination of the two, it needs to be designed by someone with a complex enough perspective to ask the right questions. Someone capable of asking the right questions and step back and say, 'What are you really trying to accomplish here? And is there a different way to look at it?' This Self-Assessment empowers people to do just that - whether their title is entrepreneur, manager, consultant, (Vice-)President, CxO etc... - they are the people who rule the future. They are the person who asks the right questions to make Software Defined Radio investments work better. This Software Defined Radio All-Inclusive Self-Assessment enables You to be that person. All the tools you need to an in-depth Software Defined Radio Self-Assessment. Featuring 946 new and updated case-based questions, organized into seven core areas of process design, this Self-Assessment will help you identify areas in which Software Defined Radio improvements can be made. In using the questions you will be better able to: - diagnose Software Defined Radio projects, initiatives, organizations, businesses and processes using accepted diagnostic standards and practices - implement evidence-based best practice strategies aligned with overall goals - integrate recent advances in Software Defined Radio and process design strategies into practice according to best practice guidelines Using a Self-Assessment tool known as the Software Defined Radio Scorecard, you will develop a clear picture of which Software Defined Radio areas need attention. Your purchase includes access details to the Software Defined Radio self-assessment dashboard download which gives you your dynamically prioritized projects-ready tool and shows your organization exactly what to do next. You will receive the following contents with New and Updated specific criteria: - The latest quick edition of the book in PDF - The latest complete edition of the book in PDF, which criteria correspond to the criteria in... - The Self-Assessment Excel Dashboard - Example pre-filled Self-Assessment Excel Dashboard to get familiar with results generation - In-depth and specific Software Defined Radio Checklists - Project management checklists and templates to assist with implementation INCLUDES LIFETIME SELF ASSESSMENT UPDATES Every self assessment comes with Lifetime Updates and Lifetime Free Updated Books. Lifetime Updates is an industry-first feature which allows you to receive verified self assessment updates, ensuring you always have the most accurate information at your fingertips.
Software defined radio (SDR) promises flexible implementation of diverse digital communication protocols on a common programmable micro-processor platform to facilitate low cost, portable wireless communication. To achieve this goal, traditional base-band wireless communication algorithms must be carefully reformulated to bridge the gap between algorithmic demand (bit-level operations) and the architectural constraints (wordlevel operations). Specifically, digital communication encodes information in the binary format (bits). On the other hand, all existing programmable micro-processors use 16, 32, or 64-bit words as the basic unit of data processing. As such, execution of a bit-level operation would require execution of several word-level instructions. This mis-match of data formats leads to significant waste of hardware resources and energy consumption. The aims of this research project is to develop provably correct algorithm transformation design methodologies that convert bit-serial communication algorithms into bit parallel format so that they can be optimally implemented in a word-based micro-architecture platform. Two specific bit-serial families of algorithms are investigated in this work: scrambler and interleaver. In this research, for the scrambler implementation, we proposed a Term Preserving Look-Ahead Transformation (TePLAT) method that facilitate automatic generation of optimal code sequences on word-based platforms that require the minimum number of cycles for execution. For the block interleaver implementation, we proposed a Tensor-product and Perfect Shuffling Algebra Transformation (TePSAT) that produces provably correct code sequences that require least amount of execution cycles. TePLAT is a technique that parallelize the software linear feedback shift register (LFSR). Linear feedback shift register is a bit-level recursive algorithm for systematic generation of pseudo-random binary sequences and has found wide applications in digital communication standards in both the medium access control layer, and the physical layer. Traditional SDR implementation seeks to transform the LFSR algorithm into a bit-vectorized format using a (bit-level) Look-ahead transformation (LAT). TePLAT differs from the traditional LAT in that it provably guarantees that the number of terms in the generating polynomial of the transformed LFSR algorithm remains unchanged (term-preserving) after TePLAT transformation. As such, it facilitates the most efficient software implementation of LFSR on any word-based microprocessor platforms todate. TePSAT is a design methodology for generating efficient code of block interleaving algorithms. The key operation involved is to transpose a bit matrix where each element is a binary bit using a sequence of bit shufflig instructions available in the word-based platform. To facilitate efficient implementation, the bit matrix transpose operation is decomposed into a sequence of (non-unique) perfect shuffling operations using perfect shuffling algebra. Our contribution lies in proposing an innovative de-factoring method that yield an average more than 30% speed up compared to the state of art algorithm. In addition to enhancing the performance of generated software code for SDR, our approaches guarantee the correctness of the code being generated through analytical proofs. They work for general micro-processor cores and are capable of exploiting the potential benefits of long word length. In the future, we also plan to investigate SDR implementation on multi-core platforms where the architectural constraints are different and will demand different design methodologies.
The Software Communications Architecture (SCA) establishes an implementation-independent framework for the development of Joint Tactical Radio System software configurable radios. It specifies the Operating Environment, services and interfaces that applications use. Software Defined Radio: The Software Communications Architecture focuses on the issues and benefits associated with developing a radio system in compliance with the SCA specification. This book provides a comprehensive, practical introduction to building a SCA-compliant system taking the reader through the historical and conceptual background to help filling in the gaps between the intent of the SCA specification and the practice. Key features: Presents a practical approach to the Software Communications Architecture Provides an example-oriented understanding of the usage of the SCA and thus allows the reader to extend the concepts and practice to more complicated multi-processor distributed environments. Covers the Operating Environment: a Core framework, CORBA middleware, POSIX operating systems and Domain profiles. Features an accompanying website with appendices, and links to further information on the SCA. This invaluable reference will provide applications programmers, designers, professional researchers, wireless manufacturers and operators with an indispensable guide to the Software Communications Architecture. Advanced undergraduate and postgraduate students on mobile and wireless communications courses will also find this to be an excellent guide to the topic.
In this thesis, we present the design of a software defined radio (SDR) transceiver using Open Source Software Communications Architecture (SCA) Implementation::Embedded (OSSIE) as the software platform. Designing a SDR requires both an appreciation of the IEEE 802.11a (wireless Local Area Network at 5 GHz band) protocol standard as well as the understanding of the C++ and CORBA software tools available to implement the physical transmitter and receiver layers. For this work, the Incremental Development Model was chosen, which is comprised of three stages: Design, Develop and Verify. The advantage of this model is its incremental nature, which allows the developer to learn from earlier versions of the system. Implementing the IEEE 802.11a physical layer using OSSIE requires a total of 23 components, 12 different functionalities and 31 sequential input-output (I/O) processes for the transmitter, while the receiver is implemented with 18 components, 12 different functionalities and 20 sequential I/O processes. The completed transmitter and receiver layers are validated successfully according to test cases stipulated in the IEEE standard.
Based on the popular Artech House classic, Digital Communication Systems Engineering with Software-Defined Radio, this book provides a practical approach to quickly learning the software-defined radio (SDR) concepts needed for work in the field. This up-to-date volume guides readers on how to quickly prototype wireless designs using SDR for real-world testing and experimentation. This book explores advanced wireless communication techniques such as OFDM, LTE, WLA, and hardware targeting. Readers will gain an understanding of the core concepts behind wireless hardware, such as the radio frequency front-end, analog-to-digital and digital-to-analog converters, as well as various processing technologies. Moreover, this volume includes chapters on timing estimation, matched filtering, frame synchronization message decoding, and source coding. The orthogonal frequency division multiplexing is explained and details about HDL code generation and deployment are provided. The book concludes with coverage of the WLAN toolbox with OFDM beacon reception and the LTE toolbox with downlink reception. Multiple case studies are provided throughout the book. Both MATLAB and Simulink source code are included to assist readers with their projects in the field.