Rate-Maximizing Adaptation in Multiantenna OFDM Systems With Space-Time-Frequency Coding

Author

Roozbahani, Mahdi Golparvar ; Khalaj, Babak H.

Author_Institution

Dept. of Electrical Eng., Sharif University of Technology, P.O. Box: 11365-9363, Tehran, Iran. E-mail: golparvar@ee.sharif.edu

Volume

6

fYear

2006

fDate

38869

Firstpage

2905

Lastpage

2910

Abstract

In this paper, we first propose a space-time-frequency (STF) coding method for multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) transmission over frequency-selective fading channels and then, based on channel mean feedback model, we develop an adaptive MIMO-OFDM transmitter by applying an adaptive energy and bit loading scheme across OFDM subcarriers. Under the constraints of fixed transmit-energy and prescribed error performance, our objective is to maximize the transmission rate. Simulation results are presented which confirm the performance of our proposed system and show that under certain circumstances, the transmission rate improves considerably as compared with competing schemes.

Keywords

Covariance matrix; Feedback; Frequency-selective fading channels; MIMO; OFDM; Receiving antennas; Time-varying channels; Transmitters; Transmitting antennas; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2006. ICC '06. IEEE International Conference on

Conference_Location

Istanbul

ISSN

8164-9547

Print_ISBN

1-4244-0355-3

Electronic_ISBN

8164-9547

Type

conf

DOI

10.1109/ICC.2006.255222

Filename

4024618