Title :
A high speed matched-filter for ZCZ-CDMA communications
Author :
Guo, Xiaoxu ; Chen, Jie ; Suehiro, Naoki ; Qui, Yulin
Author_Institution :
Microelectron. R&D Center, Chinese Acad. of Sci., Beijing, China
Abstract :
We present the VLSI design of a high speed matched-filter for a new DS-CDMA system, named ZCZ-CDMA system which is based on zero correlation zone (ZCZ) sequence. By using the unique property of zero-correlation-zone of the ZCZ-sequences, the new system improves the transmission efficiency up to 0.5-1.0 bits/chip. To realize the information transmission at 20 Mbps, a high speed matched filter employed to carry out the despreading processing should be operated at about 50 MHz. How to design such a high speed matched filter with low consumption power is the major topics of this paper.
Keywords :
3G mobile communication; VHF filters; VLSI; cellular radio; code division multiple access; field programmable gate arrays; matched filters; sequences; spread spectrum communication; 20 Mbit/s; 50 MHz; DS-CDMA system; FPGA; VHF; VLSI design; ZCZ-CDMA communications; ZCZ-sequences; despreading processing; high speed matched-filter; low consumption power; third-generation cellular communications; transmission efficiency; zero correlation zone sequence; Autocorrelation; Finite impulse response filter; Matched filters; Microelectronics; Multiaccess communication; Multipath channels; Multiplexing; North America; Research and development; Very large scale integration;
Conference_Titel :
Signal Processing, 2002 6th International Conference on
Print_ISBN :
0-7803-7488-6
DOI :
10.1109/ICOSP.2002.1180046
