On the Probability of Adaptation Error in MIMO Systems

Author

Kuo, Ping-Heng ; Smith, Peter J.

Author_Institution

Dept. of Electr. & Comput. Eng., Canterbury Univ., Christchurch

fYear

2006

fDate

11-14 Sept. 2006

Firstpage

1

Lastpage

5

Abstract

In this paper, we are interested in evaluating the probability of adaptation error (PAE) in MIMO systems using adaptive modulation or transmission rate. We attack the problem from two distinct perspectives. Firstly, for a certain rate-feedback system, the PAE is computed by building a Markov model for the channel capacity. The transition probabilities between rate states during the feedback period are approximated using a novel analytical result for the level crossing rate (LCR) of MIMO capacity. Secondly, the impact of channel estimation error on adaptive modulation over eigenmodes is considered. By utilizing the joint dynamic statistics of the eigenvalues, the instantaneous probabilities of choosing inappropriate modulation schemes can be calculated

Keywords

MIMO systems; Markov processes; adaptive modulation; channel capacity; channel estimation; eigenvalues and eigenfunctions; wireless channels; MIMO systems; Markov model; adaptive modulation; channel capacity; channel estimation error; dynamic statistics; eigenmodes; level crossing rate; probability of adaptation error; rate-feedback system; Adaptive systems; Channel capacity; Channel estimation; Computer errors; Eigenvalues and eigenfunctions; MIMO; Matrix decomposition; Probability; State feedback; Statistics;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 2006 IEEE 17th International Symposium on

Conference_Location

Helsinki

Print_ISBN

1-4244-0329-4

Electronic_ISBN

1-4244-0330-8

Type

conf

DOI

10.1109/PIMRC.2006.254016

Filename

4022571