An application of MB-OFDM UWB technology for wireless speaker systems

Author

Do-Hoon Kim ; Kang, Kyu-min ; Chungyong Lee

Author_Institution

Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea

Volume

58

Issue

4

fYear

2012

fDate

11/1/2012 12:00:00 AM

Firstpage

1169

Lastpage

1175

Abstract

We propose an application of multi-band orthogonal frequency division multiplexing (MB-OFDM) ultra-wideband (UWB) technology for wireless speaker systems which offer superior high-fidelity audio quality. The proposed scheme applies a (255,171) Reed-Solomon (RS) code and a 1/2 punctured convolutional code to the payload data in order to improve the receiver sensitivity without decreasing the transmission data rate. Because the RS block size is very small compared to the overall modem area, both the required additional hardware cost and the increase in the overall modem size are negligible. Simulation results show that the proposed scheme improves the signal-to-noise ratio by 1.5 dB with a packet error rate of 10^-3 in an additive white Gaussian noise (AWGN) channel when compared to a conventional scheme. The proposed scheme is also implemented using Verilog hardware description language and an emulation test is conducted on a field-programmable gate array (FPGA) test board.

Keywords

AWGN channels; OFDM modulation; Reed-Solomon codes; convolutional codes; error statistics; field programmable gate arrays; hardware description languages; telecommunication computing; ultra wideband communication; AWGN channel; FPGA; MB-OFDM UWB technology; RS code; Reed-Solomon code; Verilog hardware description language; additive white Gaussian noise channel; emulation test; field-programmable gate array test board; high-fidelity audio quality; multiband orthogonal frequency division multiplexing; packet error rate; payload data; punctured convolutional code; signal-to-noise ratio; transmission data rate; ultrawideband technology; wireless speaker systems; Delay effects; OFDM; Receivers; Signal to noise ratio; Transmitters; Wireless communication; Wireless sensor networks; Multi-band orthogonal frequency divisionmultiplexing (MB-OFDM); Reed-Solomon(RS); packet error rate (PER); puncturer; receiver sensitivity;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/TCE.2012.6414982

Filename

6414982