Antenna transmit diversity for wireless OFDM systems

Author

Barreto, André Noll

Author_Institution

IBM Zurich Res. Lab., Ruschlikon, Switzerland

Volume

2

fYear

2002

fDate

6/24/1905 12:00:00 AM

Firstpage

757

Abstract

We investigate several transmit-diversity techniques for wireless OFDM systems employing multiple antennas. We concentrate our investigation on methods that can be applied with few modifications to existing standards. Existing methods such as delay diversity, clustering and antenna interleaving are investigated and compared. A new approach that yields better results, consisting in applying different phase shifts on each subcarrier and on each antenna is also presented. Some practical implementation issues are also addressed.

Keywords

IEEE standards; OFDM modulation; antenna arrays; diversity reception; telecommunication standards; transmitting antennas; wireless LAN; IEEE -802. 11a; Viterbi decoder; antenna interleaving; antenna transmit diversity; channel estimation; clustering; complexity; delay diversity; multiple antennas; packet repetition schemes; peak-to-average power ratio; phase shift; subcarrier; wireless LAN standards; wireless OFDM systems; wireless local area networks; Code standards; Delay; Fading; Interleaved codes; Modulation coding; Narrowband; OFDM modulation; Protection; Transmitting antennas; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2002. VTC Spring 2002. IEEE 55th

Print_ISBN

0-7803-7484-3

Type

conf

DOI

10.1109/VTC.2002.1002589

Filename

1002589