Performance analysis of MIMO-MMSE-DFE multiuser receiver for TDMA mobile systems with spatial diversity

Author

Hwang, Jeng-Kuang ; Chen, Chiuan-Hsiu

Author_Institution

Inst. of Electr. Eng., Yuan-Ze Univ., Chung-li, Taiwan

Volume

1

fYear

2001

fDate

2001

Firstpage

142

Abstract

We consider the design and performance analysis of a multiuser detection (MUD) scheme which can increase the capacity of generic TDMA systems with spatial diversity. This scheme allows two users to occupy the same time slot for up-link transmission. At the base station, an MMSE multiple-input and multiple-output (MIMO) DFE receiver is designed to tackle various channel impairments such as Rayleigh fading, delay spread, and multiple access interference (MAI). Next, by using the Gaussian approximation (GA) technique and assuming a known MIMO channel, we derive the two user´s pseudo signal-to-noise ratios and then their theoretical error probabilities in a rather simple and insightful form. Furthermore, it is shown that without using any power control mechanism in the TDMA system, the near-far effect is not a curse but can be a blessing for the weaker user, provided that the two decision delay parameters are adjusted to their optimal values

Keywords

MIMO systems; Rayleigh channels; decision feedback equalisers; delays; diversity reception; error statistics; least mean squares methods; mobile radio; multiuser channels; radiofrequency interference; time division multiple access; DFE receiver; Gaussian approximation technique; MAI; MIMO receiver; MMSE receiver; Rayleigh fading; TDMA mobile systems; base station; delay spread; error probabilities; multiple access interference; multiple-input multiple-output receiver; multiuser detection; multiuser receiver; signal-to-noise ratios; spatial diversity; up-link transmission; Base stations; Delay; Gaussian approximation; MIMO; Multiple access interference; Multiuser detection; Performance analysis; Rayleigh channels; Signal to noise ratio; Time division multiple access;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2001. VTC 2001 Spring. IEEE VTS 53rd

Conference_Location

Rhodes

ISSN

1090-3038

Print_ISBN

0-7803-6728-6

Type

conf

DOI

10.1109/VETECS.2001.944819

Filename

944819