Title :
A novel pilot structure for the downlink transmission of cyclic prefix assisted single carrier CDMA system with frequency domain equalisation
Author :
Madhukumar, A.S. ; Chin, Francois ; Liang, Ying-Chang
Author_Institution :
Inst. for Infocomm Res., Singapore, Singapore
Abstract :
A single carrier cyclic prefix assisted CDMA system (SCRIP-CDMA) is proposed to solve the potential problems of DS-CDMA and MC-CDMA for high data rate transmission in wireless environment. This paper proposes a data dependent pilot structure for downlink transmission of SCRIP-CDMA to enhance pilot assisted channel estimation in frequency domain. The pilot symbols are computed by assuming constant envelope in frequency domain. This structure gives an easy method for channel estimation. The performance of the proposed pilot structure is compared with common pilot structure, which is data independent. Extensive computer simulations were conducted for both pilot structures.
Keywords :
channel estimation; code division multiple access; frequency-domain analysis; SCRIP-CDMA; channel estimation; constant envelope; cyclic prefix assisted single carrier CDMA system; data dependent pilot structure; downlink transmission; frequency domain equalisation; high data rate transmission; pilot assisted channel estimation; pilot structure; wireless environment; Channel estimation; Downlink; Fading; Frequency domain analysis; Interference; Multiaccess communication; Multicarrier code division multiple access; Multipath channels; OFDM; Signal resolution;
Conference_Titel :
Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on
Print_ISBN :
0-7803-7761-3
DOI :
10.1109/ISCAS.2003.1205946
