Energy-efficient multihop schemes over Weibull-fading channels: Performance analysis and optimization

摘要

In this paper, we investigate the performance of multihop communication schemes over millimeter wave Weibull-fading channels. We adopt the so-called detect-and-forward relaying strategy, with generalized M-quadrature amplitude modulations, as it offers an interesting performance-complexity tradeoff. We first provide closed-form and asymptotic expressions for the end-to-end bit error rate (BER) and energy efficiency (EE). Then, we use the obtained results to investigate both BER- and EE-optimal power allocation strategies in the adopted context. The obtained results are assessed through simulations, and the proposed analysis framework provides good insight into the design and optimization of multihop schemes as illustrated with various numerical examples.