本科通信原理设计
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2013-03-22
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最佳接收机的设计与实现
摘要：能使误码率最小的接收方式称为最佳接收，相应的接收机称为最佳接收机。而匹配滤波器则
是这样一种器件：在白噪声干扰下，如果线性滤波器的输出端在某一时刻上使信号的瞬时功率与白
噪声平均功率之比达到最大，就可以使判决电路出现错误判决的概率最小。而本次设计就是要用匹
配滤波器来实现信号的最佳接收。
本文详细的介绍了系统硬件与软件的设计过程。首先使用 SIMULINK 在 MATLAB 上进行仿真
测试，然后再在 FPGA 器件上实现。由于 FPGA 器件的集成度高，功能强，通用性好，特别是它具
有体积小，重量轻，能耗低，价格便宜，可靠性好，抗干扰能力强和使用方便等方面的独特的优点。
关键词：匹配滤波器；信噪比；SIMULINK；FPGA
The Design And Implementation Of Best Receiver
Abstract: Make the smallest error rate is called the best receiver to receive . The matched filter is such a
device: the white noise, if the linear filter output signal at a given moment on the instantaneous power and
average power of the white-noise ratio of the maximum,then,we can make the decision circuit minimum
probability of error decision. And this design is to use the matched filter to achieve the best signal
reception.
This paper describes the hardware of system and software design process. First use SIMULINK
simulation testing in MATLAB, and then implemented on the FPGA device.The FPGA device has many
advantage, such as highly integrated, good versatility small size, light weight, low power consumption,
cheap, high reliability, strong anti-interference ability and so on.
Key words: Matched filter; Signal to noise ratio; SIMULINK;FPGA
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