Optimal robust bit and power allocation for MIMO systems

Author

Zhang, Ranran ; Yang, Aimin ; Xie, Gang ; Liu, Yuanan ; Tang, Bihua

Author_Institution

Beijing Univ. of Posts & Telecommun., Beijing

fYear

2007

fDate

17-19 Oct. 2007

Firstpage

392

Lastpage

396

Abstract

This paper investigates the optimal bit and power allocation to minimize transmission power under system bit error rate (BER) and transmission rate requirements for multiple-input multiple-output (MIMO) systems with imperfect channel state information (CSI). A robust greedy algorithm is proposed and proved to be the optimal robust bit and power allocation by simulation. Simulation results also show that the proposed robust algorithm has steady BER performance, and can satisfy the system BER requirement when the CSI error increases, while the non-robust greedy algorithm can not.

Keywords

MIMO communication; error statistics; greedy algorithms; BER; CSI; MIMO system; bit error rate; greedy algorithm; imperfect channel state information; multiple-input multiple-output system; optimal robust bit allocation; optimal robust power allocation; transmission power; Adaptive systems; Algorithm design and analysis; Array signal processing; Bit error rate; Channel state information; Greedy algorithms; MIMO; OFDM modulation; Robustness; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications and Information Technologies, 2007. ISCIT '07. International Symposium on

Conference_Location

Sydney,. NSW

Print_ISBN

978-1-4244-0976-1

Electronic_ISBN

978-1-4244-0977-8

Type

conf

DOI

10.1109/ISCIT.2007.4392051

Filename

4392051