Capacity autocorrelation characteristic of MIMO systems over Doppler spread channels

Author

Gao, Chunyan ; Zhao, Ming ; Zhou, Shidong ; Yao, Yan

Author_Institution

Dept. of Electron. Eng., Tsinghua Univ., Beijing, China

Volume

1

fYear

2003

Firstpage

44

Abstract

To avoid excessive overhead, some MIMO systems adopt simple feedback that does not provide detailed channel state information (CSI) but also indicates the state of channel capacity utilization. According to the utilization information, transmitter can perform adaptive coding and modulation. The reliability of the feedback signal with delay Δt is studied in this paper in terms of the capacity autocorrelation characteristic, and impacts of antenna numbers and vehicle speed on the required delay are derived.

Keywords

Doppler effect; MIMO systems; adaptive codes; adaptive modulation; antenna arrays; channel capacity; channel coding; feedback; mobile communication; mobile radio; radio networks; Doppler spread channels; MIMO systems; adaptive coding; adaptive modulation; antenna number; capacity autocorrelation characteristic; delay; feedback signal reliability; multiple input multiple output systems; utilization information; vehicle speed; wireless systems; Adaptive coding; Antenna feeds; Autocorrelation; Channel capacity; Channel state information; Delay; MIMO; Modulation coding; State feedback; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2003. VTC 2003-Spring. The 57th IEEE Semiannual

ISSN

1090-3038

Print_ISBN

0-7803-7757-5

Type

conf

DOI

10.1109/VETECS.2003.1207498

Filename

1207498