关键词: 超宽带无线通信, MISO-UWB, Pre-Rake分集;最大比合并

Abstract:

In order to mitigate the receiver complexity and reduce the multipath fading effect in UWB(Ultra Wideband) wireless communication system,a multiple transmit antenna and one receiver antenna MISO-UWB(Multiple-Input Single-Output\|UWB) receiver model with preprocessed transmit signal of each antenna and the MRC(Maximum Ratio Combining) ware presented. And theoretical analysis of the proposed model was given. This method can effectively improve system performance in relatively low complexity by using both Pre-Rake diversity and transmit antenna diversity. Simulation results demonstrate that this type receiver possesses better performance when compared to the conventional Rake receiver and Pre-Rake system with one transmit antenna.

Key words: ultra wideband(UWB) wireless communication, multiple-input single-output-ultra wideband(MISO-UWB) , Pre-Rake diversity;maximum ratio combining(MRC)