Title :
Bit error probabilities in a two-rate communication system
Author :
Hämäläinen, Jyri ; Wichman, Risto
Author_Institution :
Helsinki Univ. of Technol., Finland
Abstract :
We examine a two-rate communication system where the transmission is suspended if the received SNR falls below a given threshold. We assume an FDD system and derive novel closed-form bit error probabilities in the presence of feedback errors in flat Rayleigh fading environment for single antenna transmission, orthogonal space-time block coding and transmit antenna selection. A single-user two-rate system would result in an infrequent use of the channel and long delays, but combined with a physical layer multiuser scheduler like in the high speed downlink packet access scheme included in the 3GPP WCDMA Release 5 specification the overall channel utilization can be improved.
Keywords :
3G mobile communication; Rayleigh channels; block codes; broadband networks; code division multiple access; error statistics; feedback; space-time codes; 3GPP WCDMA Release 5 specification; FDD system; SNR; bit error probabilities; feedback errors; flat Rayleigh fading environment; frequency division duplex; multiuser scheduler; orthogonal space-time block coding; signal to noise ratio; single antenna transmission; transmit antenna selection; two-rate communication system; wideband code division multiple access; Antenna feeds; Block codes; Delay; Downlink; Error probability; Feedback; Multiaccess communication; Physical layer; Rayleigh channels; Transmitting antennas;
Conference_Titel :
Communications, 2003. ICC '03. IEEE International Conference on
Print_ISBN :
0-7803-7802-4
DOI :
10.1109/ICC.2003.1204457
