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首页> 外文会议>2010 IEEE Global Telecommunications Conference >Average Spectral Efficiency of Opportunistic QRD-Based Cyclic Prefixed Single-Carrier Cooperative Diversity Systems with Power Allocation
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Average Spectral Efficiency of Opportunistic QRD-Based Cyclic Prefixed Single-Carrier Cooperative Diversity Systems with Power Allocation

机译：机会分配基于机会QRD的循环前缀单载波协作分集系统的平均频谱效率

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摘要

Due to higher peak-to-average power ratio and higher power backing-off in OFDM relaying systems, a cyclic prefixed single-carrier cooperative diversity system is considered in this paper. Under the transmission power constraint, the joint optimal power allocation to the source and relay node is investigated. For a two-hop decode-and-forward relaying protocol, the optimal power allocation is first obtained in the considered system, and then the opportunistic destination terminal selection is applied to improve the achievable average spectral efficiency (ASE). Based on the proposed QR decomposition (QRD)-based receiver in the destination terminal, closed-form expressions for the maximum achievable ASE are derived. Simulation results verify the derived closed-form analytical expressions.
机译：由于OFDM中继系统中较高的峰平均功率比和更高的功耗备用，本文考虑了一种循环前缀单载波合作分集系统。在传输功率约束下，研究了向源和中继节点的关节最优功率分配。对于双跳解码和前进的中继协议，首先在所考虑的系统中获得最佳功率分配，然后应用机会终端选择来提高可实现的平均光谱效率（ASE）。基于所提出的QR分解（QRD）基于目的地终端中的基于接收器，导出最大可实现ASE的闭合表达式。仿真结果验证派生的闭合性分析表达式。

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