Title :
Design and performance of multicarrier CDMA system in frequency-selective Rayleigh fading channels
Author :
Hara, Shinsuke ; Prasad, Ramjee
Author_Institution :
Dept. of Electron., Inf. & Energy Eng., Osaka Univ., Japan
fDate :
9/1/1999 12:00:00 AM
Abstract :
This paper presents the advantages and disadvantages of a multicarrier code-division multiple-access (MC-CDMA) system. The transmitter/receiver structure and, the bandwidth of transmitted signal spectrum are compared with those of a conventional direct-sequence (DS) CDMA system, and an MC-CDMA design method, how to determine the number of subcarriers and the length of guard interval is discussed. The bit error rate (BER) lower bounds for DS-CDMA and MC-CDMA systems are derived and their equivalence is theoretically demonstrated. Finally, the BER performance in downlink and uplink channels with frequency-selective Rayleigh fading is shown by computer simulation
Keywords :
Rayleigh channels; code division multiple access; error statistics; land mobile radio; multiuser channels; radio links; radio receivers; radio transmitters; spread spectrum communication; BER performance; DS-CDMA; MC-CDMA system; bit error rate; code-division multiple-access; computer simulation; direct-sequence CDMA system; downlink channel; frequency-selective Rayleigh fading channels; guard interval length; lower bounds; mobile communications; multicarrier CDMA system; subcarriers; system design; system performance; transmitted signal spectrum bandwidth; transmitter/receiver structure; uplink channel; Bandwidth; Bit error rate; Computer simulation; Design methodology; Downlink; Frequency; Multiaccess communication; Multicarrier code division multiple access; Rayleigh channels; Transmitters;
Journal_Title :
Vehicular Technology, IEEE Transactions on
