直升机卫星通信中Walsh-Hadamard码分复用的性能

2015 International Conference on Advanced Technologies for Communications (ATC) Pub Date : 2015-10-01 DOI:10.1109/ATC.2015.7388414

T. Kojima, Shuri Fujiwara

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引用次数: 9

摘要

直升机卫星通信中最重要的问题之一是旋翼叶片对接收信号的周期性阻塞。码分复用(CDM)具有克服周期性阻塞的隐式时分集效应。本文研究了采用沃尔什-阿达玛码(WHCDM)的CDM在周期性阻塞环境下的性能。首先，我们通过计算机仿真证明了一种简单的WHCDM方案具有隐式时分集效应。其次，提出了一种结合显式时分集的WHCDM方案。该方案提高了传统时分集方案在高速数据传输中的误码率性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Performance of Walsh-Hadamard code division multiplexing in helicopter satellite communications

One of the most important problems in helicopter satellite communications is the periodic blockage of the received signal caused by rotor blades. Code division multiplexing (CDM) has an implicit time diversity effect overcoming the periodic blockage. Performance of CDM employing Walsh-Hadamard code (WHCDM) under the periodic blockage environment is investigated in this paper. First, we show that a simple WHCDM scheme has the implicit time diversity effect by computer simulation. Next, a WHCDM scheme combined with explicit time diversity is proposed. The proposed scheme improves the bit error rate performance of the conventional time diversity scheme in high speed data transmission.

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2015 International Conference on Advanced Technologies for Communications (ATC)

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