Title :
How to obtain good performance by iterative and diversity techniques for uplink MC-CDMA systems
Author :
Yuan-Wu, Y. ; Sarkiss, M. ; Li, Ye Geoffrey
Author_Institution :
Div. of R&D, France Telecom
Abstract :
This paper aims at the system design on the MC-CDMA uplink. In this paper, we compare the performance and the complexity of MC-CDMA systems with and without iterative detectors and multiple receive antenna arrays. Through extensive computer simulation, we demonstrate that the following four combinations are good solutions: a single-antenna receiver with an iterative PIC detector initialized by the MF and with 3 iterations, a two-antenna receiver with MMSE-MUD or an iterative PIC detector initialized by the MF and with 2 iterations, and a four-antenna receiver with a simple MF detector. Therefore, non-iterative detectors can be used with multiple receive antenna arrays to substitute complicated iterative detectors and it is a promising solution for the 4G up-link MC-CDMA systems where multiple receive antennas are available. In this paper, we have also considered pilot-aided channel estimation with weighted delay profile technique and investigated the impact of channel estimation error on different systems
Keywords :
4G mobile communication; antenna arrays; channel estimation; code division multiple access; diversity reception; iterative methods; least mean squares methods; radio links; 4G uplink MC-CDMA systems; MMSE; diversity techniques; iterative detectors; multiple receive antenna arrays; multiuser detection; pilot-aided channel estimation; weighted delay profile technique; Antenna arrays; Channel estimation; Delay estimation; Detectors; Intersymbol interference; Multicarrier code division multiple access; Multiple access interference; OFDM; Receiving antennas; Sensor arrays;
Conference_Titel :
Vehicular Technology Conference, 2006. VTC 2006-Spring. IEEE 63rd
Conference_Location :
Melbourne, Vic.
Print_ISBN :
0-7803-9391-0
Electronic_ISBN :
1550-2252
DOI :
10.1109/VETECS.2006.1683303
