Transmit diversity for frequency selective channels in UMTS-TDD

Author

Ringel, Uwe ; Irmer, Ralf ; Fettweis, Gerhard

Author_Institution

Dresden Univ. of Technol., Germany

Volume

3

fYear

2002

fDate

2002

Firstpage

802

Abstract

Multipath propagation and fading are typical characteristics of wireless communication channels. Simultaneously, they are also the most limiting factors for high speed data rates. The paper investigates the performance of systems using multiple transmit antennas (MISO - multiple input single output) in frequency-selective channels, which combat fading and exploit multipath propagation. The system considered is UMTS-TDD. The investigations focus on different antenna configurations and on correlated propagation channels. The impact of Doppler-spread due to the velocity of the mobile user is considered. The problem of asymmetrical data-rates on uplink and downlink is addressed.

Keywords

3G mobile communication; Doppler shift; data communication; diversity reception; fading channels; mobile radio; multipath channels; time division multiplexing; Doppler-spread; UMTS-TDD; correlated propagation channels; fading channels; frequency selective channels; high speed data rates; multipath channels; multiple input single output; multiple transmit antennas; transmit diversity; Antennas and propagation; Downlink; Fading; Feedback; Frequency diversity; Receiving antennas; Robustness; Transmitters; Transmitting antennas; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Spread Spectrum Techniques and Applications, 2002 IEEE Seventh International Symposium on

Print_ISBN

0-7803-7627-7

Type

conf

DOI

10.1109/ISSSTA.2002.1049370

Filename

1049370