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EFFICIENT METHODS FOR FILTERING TO AVOID INTER-SYMBOL INTERFERENCE AND PROCESSING DIGITAL SIGNALS HAVING LARGE FREQUENCY GUARD BANDS
EFFICIENT METHODS FOR FILTERING TO AVOID INTER-SYMBOL INTERFERENCE AND PROCESSING DIGITAL SIGNALS HAVING LARGE FREQUENCY GUARD BANDS
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机译:避免符号间干扰并处理具有大频率防护带的数字信号的有效方法
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摘要
A circular filtering system which prevents the problem of inter-symbol interference. The circular filtering system utilizes a buffer memory to store samples of a given symbol and provide only these samples to a linear filter such that the output of the filter, for any given symbol is formed by filtering only samples of that input symbol. Each symbol is filtered independent of other symbols hence eliminating inter-symbol interference caused by filtering. Where symbols are tolerant to a fixed phase shift for each symbol, the circular filtering system can be simplified by reducing the size of the buffer and introducing a multiplexer.
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