Transmission strategies for high throughput MIMO OFDM communication

Author

Medvedev, Irina ; Walton, Rod ; Ketchum, John ; Nanda, Sanjiv ; Bjerke, Bjørn A. ; Wallace, Mark ; Howard, Steven

Author_Institution

QUALCOMM Inc., Concord, MA, USA

Volume

4

fYear

2005

Firstpage

2621

Abstract

This paper presents two transmission techniques for MIMO OFDM communication, referred to as spatial spreading and eigenvector steering. Spatial spreading is used when the transmitting station is not presumed to have sufficient channel state information to compute optimum steering vectors. This situation may occur for a variety of reasons, including poor or aged channel estimates or lack of calibration between the transmit and receive antenna chains. Eigenvector steering is used in cases where the transmitting station has sufficient information about the channel to compute optimum transmit steering vectors. Simulation results showing throughput and range achieved by the two transmission strategies are provided.

Keywords

MIMO systems; OFDM modulation; antenna arrays; eigenvalues and eigenfunctions; radio networks; MIMO; OFDM communication; channel state information; eigenvector steering; multiple antennas; optimum steering vectors; spatial spreading; transmission techniques; AWGN; Broadband antennas; MIMO; OFDM; Physical layer; Proposals; Receiving antennas; Throughput; Transmitting antennas; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2005. ICC 2005. 2005 IEEE International Conference on

Print_ISBN

0-7803-8938-7

Type

conf

DOI

10.1109/ICC.2005.1494824

Filename

1494824