TY - GEN
T1 - A new mix-carrier method based on fractional fourier transform in asynchronous CDMA system
AU - Wen, Rong Hui
AU - Sha, Xue Jun
AU - Qiu, Xin
PY - 2010
Y1 - 2010
N2 - In asynchronous communication system, such as MANET or uplink of CDMA system, MAI (Multiple Access Interference) is a problem that cannot be ignored. To suppress the effect of MAI, this paper introduces a new mix-carrier method in asynchronous CDMA system. The proposed method uses both cosine and Chirp as carriers, by using frequency domain filter and Fractional Fourier domain filter at the receiver to suppress MAI. Simulation results indicate that the proposed method reduces MAI effectively, and with the increase of spreading sequence length, user number and the maximum time delay between different users, the BER improvement is more significant.
AB - In asynchronous communication system, such as MANET or uplink of CDMA system, MAI (Multiple Access Interference) is a problem that cannot be ignored. To suppress the effect of MAI, this paper introduces a new mix-carrier method in asynchronous CDMA system. The proposed method uses both cosine and Chirp as carriers, by using frequency domain filter and Fractional Fourier domain filter at the receiver to suppress MAI. Simulation results indicate that the proposed method reduces MAI effectively, and with the increase of spreading sequence length, user number and the maximum time delay between different users, the BER improvement is more significant.
KW - Chirp signal
KW - Code division multiple access
KW - Fractional fourier transform
KW - Mix-carrier method
UR - https://www.scopus.com/pages/publications/78650449658
U2 - 10.1109/PCSPA.2010.286
DO - 10.1109/PCSPA.2010.286
M3 - 会议稿件
AN - SCOPUS:78650449658
SN - 9780769541808
T3 - Proceedings - 2010 1st International Conference on Pervasive Computing, Signal Processing and Applications, PCSPA 2010
SP - 1163
EP - 1166
BT - Proceedings - 2010 1st International Conference on Pervasive Computing, Signal Processing and Applications, PCSPA 2010
T2 - 1st International Conference on Pervasive Computing, Signal Processing and Applications, PCSPA 2010
Y2 - 17 September 2010 through 19 September 2010
ER -