TY - JOUR
T1 - A complementary codes based CDMA architecture for future wideband mobile communications
AU - Chen, Hsiao Hwa
PY - 2002/1/1
Y1 - 2002/1/1
N2 - This article proposes a new CDMA architecture based on orthogonal complete complementary codes, characterized by its innovative spreading modulation scheme and its upand down-links signaling design. There are several advantages of the proposed CDMA architecture if compared with conventional CDMA systems pertinent to current 2G and 3G standards. Firstly, it can achieve a spreading efficiency (SE) close to one (the SE is defined as the amount of information bit(s) conveyed by each chip); whereas the SE's of the conventional CDMA systems equal 1/N, where N denotes the length of spreading codes. Secondly, it offers a multiple access interference (MAI) free operation In both up- and down-link transmissions in MAI-AWGN channels, which can significantly reduce co-channel Interference responsible for capacity decline of a CDMA system. Thirdly, the proposed CDMA architecture in particular suits multi-rate transmission due to the use of offset stacked spreading modulation technique, which simplifies rate-matching relevant to multimedia services and facilitates asymmetric traffic In up and downlink transmissions for IP-baaed application. This paper gives a evaluation study of the proposed CDMA architecture using computer simulation, based on which it is concluded that the proposed CDMA architecture has a great potential for applications in future wideband mobile communications beyond 3G.
AB - This article proposes a new CDMA architecture based on orthogonal complete complementary codes, characterized by its innovative spreading modulation scheme and its upand down-links signaling design. There are several advantages of the proposed CDMA architecture if compared with conventional CDMA systems pertinent to current 2G and 3G standards. Firstly, it can achieve a spreading efficiency (SE) close to one (the SE is defined as the amount of information bit(s) conveyed by each chip); whereas the SE's of the conventional CDMA systems equal 1/N, where N denotes the length of spreading codes. Secondly, it offers a multiple access interference (MAI) free operation In both up- and down-link transmissions in MAI-AWGN channels, which can significantly reduce co-channel Interference responsible for capacity decline of a CDMA system. Thirdly, the proposed CDMA architecture in particular suits multi-rate transmission due to the use of offset stacked spreading modulation technique, which simplifies rate-matching relevant to multimedia services and facilitates asymmetric traffic In up and downlink transmissions for IP-baaed application. This paper gives a evaluation study of the proposed CDMA architecture using computer simulation, based on which it is concluded that the proposed CDMA architecture has a great potential for applications in future wideband mobile communications beyond 3G.
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U2 - 10.1109/TENCON.2002.1180304
DO - 10.1109/TENCON.2002.1180304
M3 - Article
AN - SCOPUS:0037972692
VL - 2
SP - 1052
EP - 1055
JO - IEEE Region 10 Annual International Conference, Proceedings/TENCON
JF - IEEE Region 10 Annual International Conference, Proceedings/TENCON
SN - 2159-3442
ER -