Configurable symbol synchronizers for software-defined radio applications

Tachwali, Y.; Barnes, W. J.; Refai, Hazem H.

doi:10.1016/j.jnca.2008.07.009

Cited by 7 publications

(8 citation statements)

References 5 publications

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“…Building a configurable multimode communication system is accomplished by extracting the commonality-sample rate conversion and channelization-between wireless air interfaces in order to build a common signal processing backbone. This backbone is easily used and can be configured by all supported wireless standards [22,23].…”

Section: Software Defined Radio Architecturementioning

confidence: 99%

Adaptability and Configurability in Cognitive Radio Design on Small Form Factor Software Radio Platform

Tachwali

Basma

Refai

2010

Wireless Pers Commun

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The recent advances in cognitive radio technology based on software defined radio platforms have extended the capabilities of wireless communication systems. The unique ability of cognitive radios to alter their communication protocols to meet changing system demands make them great candidates for wireless applications that are difficult to implement using conventional wireless terminals. Small form factor platforms make cognitive radio portable and easy to deploy. This paper discusses the design and implementation methodology to build a cognitive radio on small form factor platform with heterogeneous processing architecture. The result of this discussion is a configurable wireless transceiver that features two important concepts of cognitive radio, namely configurability and adaptability.

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Section: Software Defined Radio Architecturementioning

confidence: 99%

Adaptability and Configurability in Cognitive Radio Design on Small Form Factor Software Radio Platform

Tachwali

Basma

Refai

2010

Wireless Pers Commun

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“…Many symbol timing recovery circuits, with varying levels of flexibility, have been proposed in the literature. In [13], an early/late synchronization algorithm is presented, capable of operating a various symbol rates, but a training sequence is required. An efficient phase-independent synchronizer is presented in [14], but only phase modulated signals are supported.…”

Section: Symbol Timing Recoverymentioning

confidence: 99%

“…Including the a priori probability of the hypothesized constellations in (13) ensures that constellations that are known to more likely have a higher probability of being chosen. pp, ap, sd, and tm are conditionally independent which allows the dividend of (13) to be defined as…”

Section: Combining the Metricsmentioning

confidence: 99%

“…Given that the inputs to the multiplier are four 14 bit numbers, the output could require up to 29 bits of precision. Matlab simulations, however, showed that only 25 bits are required when the input signal to the synchronizer is fully scaled to ±2 13 . To maintain a signal of 14 bits, the output of the multiplier is rescaled by shifting it right 11 bits.…”

Section: Timing Recovery Implementationmentioning

confidence: 99%

See 1 more Smart Citation

RapidRadio: A Domain-Specific Productivity Enhancing Framework

Surís

Recio

Athanas

2010

International Journal of Reconfigurable Computing

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The RapidRadio framework for signal classification and receiver deployment is discussed. The framework is a productivity enhancing tool that reduces the required knowledge-base for implementing a receiver on an FPGA-based SDR platform. The ultimate objective of this framework is to identify unknown signals and to build FPGA-based receivers capable of receiving them. The architecture of the receiver deployed by the framework and its implementation are discussed. The framework's capacity to classify a signal and deploy a functional receiver is validated with over-the-air experiments.

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“…In [9] an earlylate synchronization algorithm is presented, capable of operating a various symbol rates, but a training sequence is required. An efficient phaseindependent synchronizer is presented in [10], but only phase modulated signals are supported.…”

Section: Symbol Timing Recoverymentioning

confidence: 99%

On the Implementation of a Quasi-Generic Synchronization Architecture for Linear Digital Modulations

Surís

Recio

Athanas

2010

J Sign Process Syst

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With increasing availability of softwaredefined radio platforms, users are no longer tied to receiving or transmitting only one type of signal. In applications, such as signal intelligence, the user may not know ahead of time the characteristics of the signal to be received. This uncertainty results in a need for more flexible receiver architectures that can be easily modified to work for multiple signal types. In this paper the FPGA implementation of a quasi-generic synchronization architecture is presented that is easily adaptable, at implementation time, to most linear modulation schemes. The implementation is shown to work for QPSK, 8QAM, 16QAM and 32QAM with timing frequency errors of up to 4% of the symbol rate.

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Configurable symbol synchronizers for software-defined radio applications

Cited by 7 publications

References 5 publications

Adaptability and Configurability in Cognitive Radio Design on Small Form Factor Software Radio Platform

Adaptability and Configurability in Cognitive Radio Design on Small Form Factor Software Radio Platform

RapidRadio: A Domain-Specific Productivity Enhancing Framework

On the Implementation of a Quasi-Generic Synchronization Architecture for Linear Digital Modulations

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