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摘要
This paper presents a new narrowband interference rejection algorithm in direct-sequence spread spectrum systems which combines time-frequency analysis and lapped transform to reject narrowband interference. First the lapped transform decomposes a multi-component signal into a number of subband signals, then Wigner distribution is applied to them. In time-frequency domain the narrowband interfer-ence is located and rejected by threshold algorithm. At last the reconstructed signal is sent to matched filter. The algorithm is suitable for both stationary and non-stationary signal. Computer simulation results are given and are compared with other transform-domain algorithms.
- 出版日期2001-7
- 单位上海交通大学
