TY - GEN
T1 - Performance of hybrid carrier DS CDMA communication system
AU - Qiu, Xin
AU - Sha, Xuejun
AU - Mei, Lin
PY - 2011
Y1 - 2011
N2 - This paper proposes a hybrid carrier DS CDMA communication system, combining 4-weighted fractional Fourier transform (4-WFRFT) with code division multiple access (CDMA). The signals are modulated in an order fractional domain and transformed by 4-WFRFT. In the time domain CDMA technique is adopted for multiple accesses and time diversity gain. The bit energy in 4-WFRFT system is distributed on the time-frequency plane more evenly and symmetrically, compared to orthogonal frequency division multiplexing (OFDM) system, in which Fourier transform is used. When there is a deep fading notch or single-frequency interference in the channel, the proposed method can split the interference to a broader range in order to reduce the influence, resulting in the better system performance.
AB - This paper proposes a hybrid carrier DS CDMA communication system, combining 4-weighted fractional Fourier transform (4-WFRFT) with code division multiple access (CDMA). The signals are modulated in an order fractional domain and transformed by 4-WFRFT. In the time domain CDMA technique is adopted for multiple accesses and time diversity gain. The bit energy in 4-WFRFT system is distributed on the time-frequency plane more evenly and symmetrically, compared to orthogonal frequency division multiplexing (OFDM) system, in which Fourier transform is used. When there is a deep fading notch or single-frequency interference in the channel, the proposed method can split the interference to a broader range in order to reduce the influence, resulting in the better system performance.
KW - 4-weighted fractional Fourier transform
KW - carrier scheme
KW - code division multiple access
KW - selective channel
UR - https://www.scopus.com/pages/publications/84858240352
U2 - 10.1109/ChinaCom.2011.6158143
DO - 10.1109/ChinaCom.2011.6158143
M3 - 会议稿件
AN - SCOPUS:84858240352
SN - 9781457701016
T3 - Proceedings of the 2011 6th International ICST Conference on Communications and Networking in China, CHINACOM 2011
SP - 176
EP - 180
BT - Proceedings of the 2011 6th International ICST Conference on Communications and Networking in China, CHINACOM 2011
T2 - 2011 6th International ICST Conference on Communications and Networking in China, CHINACOM 2011
Y2 - 17 August 2011 through 19 August 2011
ER -