The downlink energy-efficient transmission schedule with non-ideal circuit power over Wreless networks involving a single transmitter and multiple receivers was investigated. According to the special structure of the ...
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The downlink energy-efficient transmission schedule with non-ideal circuit power over Wreless networks involving a single transmitter and multiple receivers was investigated. According to the special structure of the problem, a novel algorithm called OOSCPMR （the optimal offine scheduling with non-ideal circuit power for multi-receivers） is proposed, and the optimal offine solutions to optimize the energy- efficient transmission policy are found. The packets to be transmitted can be divided into two types where one type of packet is determined to be transmitted using the enrgy- efficient tansmission time, and the other type of packet is determined by the ID moveright algorithm. Finally, an energy-efficient online schedule is developed based on te proposed OOSCPMR algoriAm. Simulation results show that the optima offline transmission schedule provides te lower bound performance for the online tansmission schedule. The proposed optimal offline and online policy is more energy efficient than the existing schemes tat assume ideal circuit power.
为了提高大规模MIMO系统的分集增益、降低译码复杂度,构建了一种码率为1的满分集贝尔实验室垂直分层空时码,并采用最大比合并算法(MRC)检测接收信号.分别计算了MRC算法的平均输出信干噪比(SINR)和传统迫零算法(ZF)的平均信噪比(SNR),分析了性能相等时应满足的条件,并且比较了2种算法的计算复杂度和BER性能.结果表明,当BER=10-5,收发天线数为400和40、调制方式分别为BPSK和QPSK时,最大比合并算法的BER性能较迫零算法分别存在0.4和0.3 d B的增益.采用所提算法对接收信号进行检测,不但能够降低系统的计算复杂度,而且能保证系统的误比特率性能.
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