Title :
Investigation of two-branch transmit diversity with two-branch receive diversity
Author :
Knudsen, Mikael B. ; Vejlgaard, Benny N. ; Pedersen, Gert F.
Author_Institution :
Siemens Mobile Phone A/S, Denmark
Abstract :
This work investigates the possible SNR gain, which can be obtained by using two-branch transmit diversity with two-branch receive diversity. Furthermore a low complexity pre-detection antenna system for a handheld phone has been investigated as an option for receive diversity. The pre-detection antenna system consists of two antenna elements where the phase is altered prior to a RF combining. The results show the potential for a significant improvement of the overall SNR performance by using diversity at both the transmitter and receiver
Keywords :
Rayleigh channels; code division multiple access; computational complexity; diversity reception; indoor radio; microcellular radio; mobile antennas; multipath channels; multiuser channels; noise; receiving antennas; signal detection; transmitting antennas; RF combining; Rayleigh channel; SNR gain; SNR performance; UMTS system; WCDMA system; antenna elements; closed loop transmit diversity; handheld phone; indoor environment; low complexity pre-detection antenna system; macro cellular environments; micro cellular environment; multipath fading; open loop transmit diversity; two-branch receive diversity; two-branch transmit diversity; 3G mobile communication; Dispersion; Diversity reception; Downlink; Fading; Multipath channels; Radio frequency; Radio transmitters; Receiving antennas; Telephone sets;
Conference_Titel :
Vehicular Technology Conference, 2000. IEEE-VTS Fall VTC 2000. 52nd
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-6507-0
DOI :
10.1109/VETECF.2000.883308
