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Computational efficient SLM–OFDM receiver for time-invariant indoor fading channel

Adegbite, Saheed A. and McMeekin, Scott and Stewart, Brian G. (2017) Computational efficient SLM–OFDM receiver for time-invariant indoor fading channel. Wireless Personal Communications. ISSN 0929-6212

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Abstract

This paper addresses receiver related side information (SI) estimation issues when selected mapping is used to reduce peak-to-average power ratio in orthogonal frequency division multiplexing (OFDM) systems. The SI contains critical information and its accurate estimation is required to enable successful recovery of payload data regardless of the channel condition. However, the need for SI estimation poses some practical issues in the form of high computational complexity and implementation challenges. Through simulations, this paper investigates the performance of an alternative data decoding approach called Embedded Coded Modulation (ECM), which requires no SI estimation. Using a form of block-type OFDM frame structure, results show that the ECM technique produces identical data decoding performance as other methods even in the presence of some non-linear amplifier distortions. In addition, it is shown that the ECM method eliminates SI related computational complexity and implementation problems.