Title :
The use of coding and diversity combining for mitigating fading effects in a DS/CDMA system
Author :
Díaz, Pilar ; Agusti, Ramon
Author_Institution :
Dept. of Signal Theory & Commun., Univ. Politecnica de Catalunya, Barcelona, Spain
fDate :
2/1/1998 12:00:00 AM
Abstract :
Spatial diversity is an attractive technology to cope with the fading channel encountered in mobile communications. This paper presents novel closed analytical expressions of the bit-error rate (BER) achievable in a coherent binary phase-shift-keying (CBPSK) direct-sequence code-division multiple-access (DS/CDMA) system for any power delay profile and for either postdetection selection or maximal ratio combining (MRC). In particular, expressions for the cutoff rate R o and for its related parameter D are also formulated in order to assess the system performance under the consideration of some channel coding schemes. Finally, an exemplary study is carried out in order to illustrate the behavior of a realistic space-diversity code-division multiple-access (CDMA) system according to the analytical expressions that have been derived
Keywords :
Rayleigh channels; cellular radio; channel capacity; channel coding; code division multiple access; coding errors; delays; diversity reception; error statistics; fading; land mobile radio; multipath channels; phase shift keying; pseudonoise codes; spread spectrum communication; BER; DS/CDMA system; Rayleigh multipath fading; bit-error rate; cellular system; channel coding; closed analytical expressions; code-division multiple-access; coherent binary phase-shift-keying; cutoff rate; direct-sequence code-division multiple-access; diversity combining; fading channel; maximal ratio combining; mobile radio communications; power delay profile; spatial diversity; system performance; Bit error rate; Channel coding; Diversity reception; Fading; Mobile communication; Multiaccess communication; Multipath channels; Power control; Rayleigh channels; Receiving antennas;
Journal_Title :
Vehicular Technology, IEEE Transactions on
