首页> 外文会议>Broadband Multimedia Systems and Broadcasting, 2009. BMSB '09 >Performance analysis of transmit antenna selection in broadcast MISO channels
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Performance analysis of transmit antenna selection in broadcast MISO channels

机译:广播MISO信道中发送天线选择的性能分析

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Time-division multiple access (TDMA) with transmit antenna selection (TAS) is a simple and feasible transmission scheme for broadcast multiple-input single-output (BC-MISO) channels. Compared to other more complex strategies, TAS exhibits two important advantages: 1) The required channel knowledge at the transmitter is relatively low and 2) it only needs a single radio-frequency chain at the transmitter. In this work we analyze the performance of TAS in BC-MISO channels. We derive simple exact closed-form expressions for the achievable sum rate of TDMA-TAS in asymmetric BC-MISO ergodic Rayleigh channels, as well as closed-form expressions for the resulting individual users' rates. Using these expressions we compare the achievable sum-rate of TAS with two more complex schemes: dirty paper coding and TDMA with transmit beamforming. The performance comparisons reveal that, in some cases, TAS could be and interesting practical alternative to other more complex schemes.
机译:带有发射天线选择(TAS)的时分多址(TDMA)是一种简单可行的广播多输入单输出(BC-MISO)信道传输方案。与其他更复杂的策略相比,TAS具有两个重要优点:1)发射机所需的信道知识相对较低; 2)发射机仅需要一个射频链。在这项工作中,我们分析了TAS在BC-MISO渠道中的表现。我们针对不对称BC-MISO遍历瑞利信道中TDMA-TAS的可实现总和率,得出简单的精确封闭式表达式,并针对各个用户的费率得出封闭式表达式。使用这些表达式,我们将TAS的可实现总和率与两个更复杂的方案进行比较:脏纸编码和带有发送波束成形的TDMA。性能比较表明,在某些情况下,TAS可能是其他更复杂方案的有趣替代方案。

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