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Asymptotic Error Probability Analysis of DQPSK/DDQPSK over Nakagami-m Fading Channels
IEICE TRANSACTIONS on Communications
Publication Date: 2016/01/01
Online ISSN: 1745-1345
Type of Manuscript: PAPER
Category: Fundamental Theories for Communications
differential quaternary phase shift keying (DQPSK), doubly-differential quaternary phase shift keying (DDQPSK), bit error probability (BEP), symbol error probability (SEP), Nakagami-m fading channels,
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In this paper, we derive two simple asymptotic closed-form formulas for the average bit error probability (BEP) of differential quaternary phase shift keying (DQPSK) with Gray encoding and a simple asymptotic approximation for the average symbol error probability (SEP) of doubly-differential quaternary phase shift keying (DDQPSK) in Nakagami-m fading channels. Compared with the existing BEP/SEP expressions, the derived concise formulas are much more effective in evaluating the asymptotic properties of DQPSK/DDQPSK with various Nakagami fading parameters, the accuracy of which is verified by extensive numerical results.