Title :
Joint Carrier Frequency Offset and Channel Estimation in MC-DS-CDMA Systems
Author :
Liu, Licheng ; Dai, Xianhua
Author_Institution :
Sch. of Inf. Sci. & Technol., Sun Yat-sen Univ., Guangzhou
Abstract :
A new algorithm based on pilots for the joint carrier frequency offset (CFO) and channel estimation of the uplink of MC-DS-CDMA systems is presented. As with the specially designed pilots, the inter-user interference (IUI) among user specific sub-matrix of received signal matrix in time domain does not exist any more, CFO and channel estimations are easily obtained for all users with single user CFO and channel estimation approaches. As shown in simulations, the proposed approach can get satisfactory CFO and channel estimations with low computation complexity.
Keywords :
channel estimation; code division multiple access; computational complexity; spread spectrum communication; MC-DS-CDMA systems; channel estimation; inter-user interference; joint carrier frequency offset; low computation complexity; multicarrier direct sequence code division multiple access; signal matrix; Appropriate technology; Channel estimation; Frequency diversity; Frequency estimation; Frequency shift keying; Interference; Multiaccess communication; OFDM; Signal design; Transmitters;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2008. WiCOM '08. 4th International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-4244-2107-7
Electronic_ISBN :
978-1-4244-2108-4
DOI :
10.1109/WiCom.2008.421
