Title :
Parameter selection for multiuser receivers based on iterative methods
Author :
Trichard, Louis G F ; Colling, I.B. ; Evans, Jamie S.
Author_Institution :
Sch. of Electr. & Inf. Eng., Sydney Univ., NSW, Australia
Abstract :
This paper considers multi-stage interference-cancellation receivers for DS-CDMA communications. The particular focus is on receivers employing partial parallel interference-cancellation which converge to the linear minimum-mean-square-error receiver as the number of stages increases. Our main contribution is the specification of a design rule for selecting the partial cancellation factor as a simple function of the system loading and the signal-to-noise ratio. Assuming the optimal cancellation factor is in use, we also determine the minimum number of stages required to achieve near-LMMSE performance
Keywords :
code division multiple access; convergence of numerical methods; interference suppression; iterative methods; least mean squares methods; multiuser channels; radio receivers; radiofrequency interference; spread spectrum communication; DS-CDMA communications; SNR; convergence properties; design rule specification; iterative methods; linear minimum-mean-square-error receiver; multi-stage interference-cancellation receivers; multiuser receivers; near-LMMSE performance; optimal cancellation factor; parameter selection; partial cancellation factor; partial parallel interference-cancellation; signal-to-noise ratio; system loading; Australia; Bit error rate; Computational efficiency; Convergence; Interference cancellation; Iterative methods; Laboratories; Multiaccess communication; Signal design; Signal to noise ratio;
Conference_Titel :
Vehicular Technology Conference Proceedings, 2000. VTC 2000-Spring Tokyo. 2000 IEEE 51st
Conference_Location :
Tokyo
Print_ISBN :
0-7803-5718-3
DOI :
10.1109/VETECS.2000.851260
