Constrained capacity of linear precoded ARQ in MIMO wireless systems

Author

Sun, Haitong ; Samra, Harvind ; Ding, Zhi ; Manton, Jonathan

Author_Institution

Dept. of Electr. & Comput. Eng., California Univ., Davis, CA, USA

Volume

3

fYear

2005

fDate

18-23 March 2005

Abstract

The paper investigates the constrained capacity of sequential ARQ linear precoding in flat fading MIMO systems. To utilize fully the time diversity provided by ARQ, we derive the optimal linear ARQ precoders in a flat fading MIMO channel with the objective of maximizing the mutual information delivered by multiple transmissions of the same packet. The capacity-maximizing ARQ precoders combine water-pouring power loading and the optimal pairing of singular vectors in the current retransmission with those from previous transmissions. This optimal pairing is a special feature unique to sequential ARQ precoding and plays important role in maximizing the mutual information.

Keywords

MIMO systems; automatic repeat request; channel capacity; fading channels; linear codes; optimisation; packet radio networks; MIMO wireless systems; capacity maximization; constrained capacity; flat fading channel; linearly precoded ARQ; mutual information maximization; packet multiple transmissions; sequential ARQ linear precoding; sequential ARQ precoding; time diversity; water-pouring power loading; Automatic repeat request; Channel capacity; Channel state information; Fading; Gaussian noise; MIMO; Mutual information; Receiving antennas; Transmitters; Vectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 2005. Proceedings. (ICASSP '05). IEEE International Conference on

ISSN

1520-6149

Print_ISBN

0-7803-8874-7

Type

conf

DOI

10.1109/ICASSP.2005.1415737

Filename

1415737