Comparative study of joint-detection based on FFTs and the 2-RAKE receiver of the TD-SCDMA up-link [2-RAKE read 2D RAKE]

Author

Weixin, Liu ; Zhongpei, Zhang ; Shaoqian, Li ; Gang, Wu

Author_Institution

Nat. Key Lab of Commun., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

Volume

6

fYear

2004

fDate

26-29 Sept. 2004

Firstpage

3975

Abstract

JD (joint-detection) and 2D RAKE (two-dimensional RAKE) receiver method are two important methods of MUD (multiuser detection) of the TD-SCDMA (time division synchronization-code division multiple access) up-link. We compare these two method for complexity and performance. In the JD method, we also use FFTs (fast Fourier transforms) and overlapping to reduce the computational complexity. We analyze the complexity and performance of these two methods theoretically and also apply Monte Carlo simulation to them. From the analysis and the simulation, we can draw the conclusion that the performance of JD based on FFTs is better than that of the 2D RAKE in the TD-SCDMA up-link, but with more complexity. The analysis and simulation do not involve intercell interference and the simulation channel is the Rayleigh channel based on 3GPP TS 25.105.

Keywords

Rayleigh channels; code division multiple access; computational complexity; fast Fourier transforms; multiuser detection; radio receivers; time division multiple access; 2D RAKE receiver; CDMA; FFT; MUD; Rayleigh channel; TD-SCDMA uplink; TDMA; computational complexity; fast Fourier transforms; intercell interference; joint-detection; multiuser detection; time division multiple access; time division synchronization-code division multiple access; Analytical models; Computational complexity; Computational modeling; Fast Fourier transforms; Flexible printed circuits; Interference; Multiuser detection; Performance analysis; RAKE receivers; Time division synchronous code division multiple access;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th

ISSN

1090-3038

Print_ISBN

0-7803-8521-7

Type

conf

DOI

10.1109/VETECF.2004.1404823

Filename

1404823