Optimized multi-antenna power allocation for spatial signal shaping in ad-hoc networks with multiple access interference

Author

Baccarelli, E. ; Biagi, M.

Author_Institution

Dept. of INFO-COM, Rome Univ., Italy

Volume

3

fYear

2003

fDate

6-9 Oct. 2003

Firstpage

1583

Abstract

This paper deals with optimized multiple-input multiple-output (MIMO) channel estimation and ensuing information throughput conveyed by pilot-based multi-antenna systems affected by both spatially colored multiple access interference (MAI) and errors in the available channel estimates. The architecture of the minimum mean square error (MMSE) MIMO channel estimator is derived and the related analytical conditions for the optimal design of space-time training sequences are provided. Afterwards, closed form expressions for the maximum information throughput sustained by the considered systems for Gaussian distributed input signals are given and, then, a novel power allocation algorithm for the asymptotical achievement of the system capacity is developed. Some final MAC considerations are pointed out.

Keywords

MIMO systems; ad hoc networks; antenna arrays; channel estimation; least mean squares methods; radiofrequency interference; Gaussian distributed input signal; ad-hoc network; information throughput; minimum mean square error; multiple-input multiple-output channel estimation; optimized multiantenna power allocation; pilot wireless MIMO system; space-time training sequence; spatial signal shaping; spatially colored multiple access interference; Ad hoc networks; Channel estimation; Intelligent networks; Iterative algorithms; MIMO; Multiple access interference; Radio transmitters; Receiving antennas; Throughput; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2003. VTC 2003-Fall. 2003 IEEE 58th

ISSN

1090-3038

Print_ISBN

0-7803-7954-3

Type

conf

DOI

10.1109/VETECF.2003.1285291

Filename

1285291