Multiuser MIMO systems and interference avoidance

Author

Popescu, Dimitrie C. ; Rose, Christopher

Author_Institution

Dept. of Electr. Eng., Texas Univ., San Antonio, TX, USA

Volume

4

fYear

2003

fDate

6-10 April 2003

Abstract

We present the application of interference avoidance methods to multiuser systems with multiple inputs and multiple outputs. A general signal space formulation is used which makes the approach applicable to any MIMO system model regardless of the choice of basis functions. Information is transmitted via multicode CDMA where symbols that comprise the data frame from a given user are "spread" over the available dimensions using a precoding matrix. Optimal precoding matrices that maximize signal-to-interference-plus-noise ratio for all symbols/users are then obtained by application of distributed greedy interference avoidance methods. Numerical simulations have been performed and the signal-to-noise ratio distribution for receiver antennas and complementary cumulative distribution functions for sum capacity with optimal precoding matrices are also presented.

Keywords

MIMO systems; code division multiple access; diversity reception; matrix algebra; optimisation; radio receivers; radiofrequency interference; statistical analysis; basis functions; complementary cumulative distribution functions; distributed greedy methods; interference avoidance; multicode CDMA; multiuser MIMO systems; precoding matrix; receiver antennas; signal-to-interference-plus-noise ratio maximization; signal-to-noise ratio; spatial diversity; Antenna arrays; Base stations; Distribution functions; Filling; Interference; MIMO; Multiaccess communication; Receiving antennas; Signal to noise ratio; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03). 2003 IEEE International Conference on

ISSN

1520-6149

Print_ISBN

0-7803-7663-3

Type

conf

DOI

10.1109/ICASSP.2003.1202771

Filename

1202771