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Simplified Receiver Design for WLAN Systems with Packet Binary Convolutional Coding (PBCC) Transmission

For WLAN systems that adopt PBCC modulation, the receiver is composed of two parts: the pre-filter and the reduced- state equalizer. Whitened matched filter (WMF) is usually designed as the pre-filter, but the calculation of the coefficients is complex. In order to reduce the computation burden of the pre- filtering process, a new pre-filter design method is proposed, which uses the zero-forcing rule to calculate the pre-filter coefficients. M-algorithm is adopted to finish the following equalization, which only chooses M best nodes among all the possible states. Computer simulation results indicate that when such receiver design is adopted, the complexity of the receiver is decreased greatly, while the receiver performance is comparative with the traditional design method.