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首页> 外文期刊>European transactions on telecommunications >Linear Adaptive Transmitter-Receiver Structures for Asynchronous CDMA Systems
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Linear Adaptive Transmitter-Receiver Structures for Asynchronous CDMA Systems

机译：异步CDMA系统的线性自适应收发器结构

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摘要

An asynchronous code-division multiple access (CDMA) system with adaptive transmitters and receivers is considered. It is assumed that the adaptive receiver and transmitter have no knowledge of the signature waveforms and timing of other users. The concept of adaptive transmitter is based on feedback information from the corresponding receiver. The information obtained from the receiver is used to calculate the optimum transmitter signature. The signatures are adaptively adjusted according to the MSE criterion during the training period as well as during data transmission. CDMA systems employing the adaptive transmitters in the presence of multiple access interference achieve the matched filter bound with no interference. The proposed CDMA system are tested by simulation over a channel with multiple access interference and additive white gaussian noise.
机译：考虑具有自适应发送器和接收器的异步码分多址（CDMA）系统。假定自适应接收器和发送器不了解其他用户的签名波形和时序。自适应发射机的概念基于来自相应接收机的反馈信息。从接收器获得的信息用于计算最佳发送器签名。在训练期间以及在数据传输期间，根据MSE标准对签名进行自适应调整。在多址干扰的情况下采用自适应发射机的CDMA系统在没有干扰的情况下实现了匹配的滤波器范围。所建议的CDMA系统通过在具有多址干扰和加性高斯白噪声的信道上进行仿真测试。

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