A New Approach to BSOFDM: Parallel Concatenated Spreading Matrices OFDM

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Author(s): Ibrahim Raad (University of Wollongong, Australia)and Xiaojing Huang (University of Wollongong, Australia)
Copyright: 2010
Pages: 14
Source title: Fourth-Generation Wireless Networks: Applications and Innovations
Source Author(s)/Editor(s): Sasan Adibi (University of Waterloo, Canada), Amin Mobasher (Research in Motion (RIM), Ltd., Canada)and Mostafa Tofighbakhsh (AT&T Labs, USA)
DOI: 10.4018/978-1-61520-674-2.ch025

Keywords: Information Science Reference / Media & Communications / Mobile and Wireless Computing / Wireless Systems

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Abstract

This chapter discusses a new concept for Block Spread OFDM called Parallel Concatenated Spreading matrices OFDM (PCSM-OFDM) which was first presented in (Raad, I. and Huang, X. 2007). While BSOFDM improved the overall BER performance on OFDM in frequency selective channels, this new approach further improves the BER of BSOFDM by over 3dB gain. This uses coding gain to achieve this and is similar in concept to the well known error correction codes Turbo Codes. This is done by copying the data at the transmitter n times in parallel and multiplexing.

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