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Diversity–Multiplexing Tradeoff of the Half-Duplex Slow Fading Multiple-Access Relay Channel Based on Generalized Quantize-and-Forward Scheme

机译:基于广义量化转发方案的半双工慢衰落多址中继信道的分集复用权衡

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摘要

This paper investigates the diversity–multiplexing tradeoff (DMT) of the generalized quantize-and-forward (GQF) relaying scheme over the slow fading half-duplex multiple-access relay channel (HD-MARC). The GQF scheme takes into account the multiuser interference at the relay compared with the original quantize-and-forward scheme. The compress-and-forward scheme achieves the optimal DMT for high multiplexing gains when the channel state information (CSI) of the relay–destination (R–D) link is available at the relay. However, having the CSI of the R–D link at relay is not always possible due to the practical considerations of the wireless system. In this paper, the DMT of the GQF scheme is derived without R–D link CSI at the relay. Moreover, the GQF scheme achieves the optimal DMT for the entire range of multiplexing gains.
机译:本文研究了慢速衰落半双工多址中继信道(HD-MARC)上的广义量化转发(GQF)中继方案的分集复用折衷(DMT)。与原始的量化转发方案相比,GQF方案考虑了中继站上的多用户干扰。当中继站(RD)链路的信道状态信息(CSI)在中继站上可用时,压缩转发方案可实现高复用增益的最佳DMT。但是,由于无线系统的实际考虑,在中继站具有R–D链路的CSI并非总是可能的。在本文中,GQF方案的DMT是在中继站没有R-D链路CSI的情况下得出的。此外,GQF方案为整个复用增益范围实现了最佳DMT。

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