【摘要】 针对直接序列扩频超宽带通信系统中前端电路复杂度较高的问题,设计了一种新的简化RAKE接收机。这种接收机避免在前端接收电路上对每径信号进行的模拟相关运算,将脉冲信号通过接收机做相关运算变换到低频信号之后进行数字处理,从而降低前端电路的硬件规模。论文对简化RAKE接收机的误码率性能进行了理论分析和仿真,结果表明在误码率性能相近情况下,这种简化RAKE接收机的前端硬件规模为传统RAKE接收机的1/16。更多还原

【Abstract】 The front-end circuit for DS-CDMA(direct-sequence code division multiple access) Ultra-wideband communication systems is very complicated.A simplified RAKE receiver was developed which avoids the analog correlation for each finger by moving the finger combination to the back-end digital circuit by using correlation,which simplifies the front-end circuit.Analysis of the bit error rate performance of the simplified RAKE receiver shows that the hardware cost of the receiver is 1/16 of a traditional receiver.更多还原