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首页> 外文会议>International Bhurban Conference on Applied Sciences and Technology >Distributed turbo codes with multiple-relays and multi-receive antennas at the destination for non-line of sight source-destination link with unknown CSI
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Distributed turbo codes with multiple-relays and multi-receive antennas at the destination for non-line of sight source-destination link with unknown CSI

机译：在目标位置具有多个中继器和多个接收天线的分布式turbo码，用于具有未知CSI的非视线源-目标链路

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This paper presents the half-duplex coded-cooperative scheme for non-line of sight communication systems. Multiple-relays are divided in two groups which are frequency division multiplexed and participate in coded-cooperation. Antenna array is used at the destination to obtain multi-receive diversity. Maximal ratio combining (MRC) is used at the destination to combine the signals transmitted at different relays. Rician fading channel is assumed among all the communication nodes. Moreover, channel state information (CSI) is assumed unknown at the destination. The unknown CSI is estimated using adaptive Spatio-temporal recursive least squares (ST-RLS) algorithm. Turbo codes are utilized to provide coded-cooperative diversity and joint iterative decoding scheme is utilized at the destination. The overall end-to-end bit error rate (BER) performance of the coded-cooperative scheme is analyzed with the help of Monte-Carlo simulations. The numerical simulations show that the proposed scheme provides coded-cooperative diversity, multi-receive diversity and clearly outperforms the non-cooperative transmission scheme under the identical conditions.
机译：本文提出了一种用于视线通信系统的半双工编码合作方案。多个中继器分为两组，它们进行频分复用并参与编码合作。目的地使用天线阵列以获得多接收分集。在目的地使用最大比率合并（MRC）合并在不同继电器上传输的信号。在所有通信节点之间都假定有Rician衰落信道。此外，假设信道状态信息（CSI）在目的地是未知的。使用自适应时空递归最小二乘（ST-RLS）算法估计未知CSI。 Turbo码用于提供编码合作分集，而联合迭代解码方案则在目的地使用。借助Monte-Carlo仿真分析了编码合作方案的总体端到端误码率（BER）性能。数值仿真表明，该方案在相同条件下提供了编码合作分集，多接收分集，明显优于非合作传输方案。

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