Efficient Tv White Space Filter Bank Transceiver

Elliot, Ross A.; Enderwitz, Martin A.; Darbari, Faisal; Crockett, Louise H.; Weiss, Stephan; Stewart, Robert W.

doi:10.5281/zenodo.43291

Cited by 3 publications

References 16 publications

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TVWS filter bank transceiver on OMAP-L137 evaluation module

Elliot

Enderwitz

Darbari

et al. 2012

2012 5th European DSP Education and Research Conference (EDERC)

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Communications devices operating in the TV white space (TVWS) spectrum will be strictly regulated, requiring compliance with spectral masks to protect incumbent users and sufficient frequency agility to allow access to numerous frequency bands at different times and locations. Therefore, future designs operating at radio frequency (RF) have been proposed. The purpose of this paper is to demonstrate an implementation of such a transceivers at a scale-down frequency implemented on the OMAP--L137 evaluation module, whereby the RF link can be replaced by the device's audio I/O, thus enabling easier observation and algorithm testing for students

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TVWS filter bank transceiver on OMAP-L137 evaluation module

Elliot

Enderwitz

Darbari

et al. 2012

2012 5th European DSP Education and Research Conference (EDERC)

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Wideband TV White Space Transceiver Design and Implementation

Elliot

Enderwitz

Thompson

et al. 2016

IEEE Trans. Circuits Syst. II

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For transceivers operating in television white space (TVWS), frequency agility and strict spectral mask fulfillments are vital. In the U.K., TVWS covers a 320-MHz-wide frequency band in the UHF range, and the aim of this brief is to present a wideband digital up-and downconverter for this scenario. Sampling at radio frequency (RF), a two-stage digital conversion is presented, which consists of a polyphase filter (PPF) for implicit upsampling and decimation, and a filter-bank-based multicarrier approach to resolve the 8-MHz channels within the TVWS band. We demonstrate that the up-and downconversion of 40 such channels is hardly more costly than that of a single channel. Appropriate filter design can satisfy the mandated spectral mask and control the reconstruction error. A field-programmable gate array implementation is discussed, capable of running the wideband transceiver on a single Virtex-7 device with sufficient word length to preserve the spectral mask requirements of the system.

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FPGA Implementation of a TVWS Up- and Downconverter Using Non-Power-of-Two FFT Modulated Filter Banks

Anis

Guo

Weiss

et al. 2019

2019 27th European Signal Processing Conference (EUSIPCO)

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This paper addresses an oversampled filter bank (OSFB) approach to up-and down-convert any or all of the 40 channels in the United Kingdom's TV white space (TVWS). We particularly consider the use of non-power-of-two fast Fourier transforms (FFTs), which provides a greater choice of design parameters over existing OSFB implementations. Using a fieldprogrammable gate array (FPGA) software defined radio (SDR) platform, we compare two different 40-point FFT-based implementations of the system-one fully parallelised, one serialised-with an existing design using a radix-two 64-point FFT in terms of implementation cost and power consumption.

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Efficient Tv White Space Filter Bank Transceiver

Cited by 3 publications

References 16 publications

TVWS filter bank transceiver on OMAP-L137 evaluation module

TVWS filter bank transceiver on OMAP-L137 evaluation module

Wideband TV White Space Transceiver Design and Implementation

FPGA Implementation of a TVWS Up- and Downconverter Using Non-Power-of-Two FFT Modulated Filter Banks

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