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Accurate Error Probability Analysis of MCIKOFDM with a LowComplexity Detection over TWDP Fading Channels
Donggu KIM Hoojin LEE Joonhyuk KANG
Publication
IEICE TRANSACTIONS on Communications
Vol.E101B
No.6
pp.13471351 Publication Date: 2018/06/01
Online ISSN: 17451345
DOI: 10.1587/transcom.2017EBP3159
Type of Manuscript: PAPER Category: Fundamental Theories for Communications Keyword: multicarrier index keying (MCIK), orthogonal frequency division multiplexing (OFDM), twowave with diffuse power (TWDP) fading, pairwise error probability (PEP), moment generating function (MGF), asymptotic analysis,
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Summary:
This paper derives highly accurate and effective closedform formulas for the average upper bound on the pairwise error probability (PEP) of the multicarrier index keying orthogonal frequency division multiplexing (MCIKOFDM) system with lowcomplexity detection (i.e., greedy detection) in twowave with diffuse power (TWDP) fading channels. To be specific, we utilize an exact moment generating function (MGF) of the signaltonoise ratio (SNR) under TWDP fading to guarantee highly precise investigations of error probability performance; existing formulas for average PEP employ the approximate probability density function (PDF) of the SNR for TWDP fading, thereby inducing inherent approximation error. Moreover, some special cases of TWDP fading are also considered. To quantitatively reveal the achievable modulation gain and diversity order, we further derive asymptotic formulas for the upper bound on the average PEP. The obtained asymptotic expressions can be used to rapidly estimate the achievable error performance of MCIKOFDM with the greedy detection over TWDP fading in high SNR regimes.

