A new architecture of matched-filter bank for high-speed code acquisition of ZCZ-CDMA system

Abstract

We propose a new architecture of matched-filter (MF) bank for the code acquisition of ZCZ-CDMA system. The ZCZ-CDMA system can accurately detect multipath properties and greatly improve data transmission efficiency by using the special properties of the zero correlation zones (ZCZ) sequence. As a traditional matched-filter bank is used to carry out the code acquisition and the despreading operations to realize the information transmission at 20Mbps in the ZCZ-CDMA system, the circuit scale is too large and the power consumption is too high. Using our proposed new matched-filter bank, the circuit scale and the power consumption is greatly reduced. The high-speed and lower power VLSI design of the new matched-filter bank is implemented on FPGA.