Title :
Residue number system based multiple code DS-CDMA systems
Author :
Yang, Lie-Liang ; Hanzo, Lajos
Author_Institution :
Dept. of Electron. & Comput. Sci., Southampton Univ., UK
Abstract :
A novel multi-code direct-sequence code division multiple-access (DS-CDMA) system based on the so-called residue number system (RNS) or the redundant residue number system (RRNS) is proposed. Concatenated codes employing RNS product codes (RNS-PC) as the inner codes and non-binary Reed-Solomon (RS) codes as the outer codes are adopted to improve the system performance. The results show that, for a given outer RS code and a given number of moduli of the inner RNS-PC, the performance of the system can be optimized by varying the relative number of information moduli and redundant moduli of the inner RNS-PC, as well as by appropriately choosing the moduli´s values
Keywords :
Rayleigh channels; Reed-Solomon codes; code division multiple access; concatenated codes; multipath channels; multiuser channels; radio receivers; residue number systems; spread spectrum communication; RNS product codes; RS codes; concatenated codes; direct-sequence code division multiple-access; information moduli; inner RNS-PC; inner codes; multipath Rayleigh fading channels; multiple code DS-CDMA systems; nonbinary Reed-Solomon codes; outer codes; receiver model; redundant moduli; redundant residue number system; residue number system; system performance; Concatenated codes; Correlators; Decoding; Diversity reception; Dynamic range; Error correction codes; Multiaccess communication; Product codes; Protection; Reed-Solomon codes;
Conference_Titel :
Vehicular Technology Conference, 1999 IEEE 49th
Conference_Location :
Houston, TX
Print_ISBN :
0-7803-5565-2
DOI :
10.1109/VETEC.1999.780587
