Title :
CTH05-5: Evaluation of Bit Error Rate for Packet Combining with Constellation Rearrangement
Author :
Benjillali, Mustapha ; Szczecinski, Leszek ; Aissa, Sonia
Author_Institution :
INRS-EMT, Montreal, QC
fDate :
Nov. 27 2006-Dec. 1 2006
Abstract :
In this paper, we propose a method to evaluate analytically the bit error rate (BER) for packet combining with Gray mapping and constellation rearrangement (CoRe) between retransmissions - a mapping diversity scheme adopted in the high speed downlink packet access (HSDPA) standard. We first develop the model for the logarithmic likelihood ratios (LLR) and show that their conditional probability density functions (pdf) are piecewise Gaussian. We then present the derivation of the BER and illustrate it with simulation results that validate our formulation.
Keywords :
AWGN channels; error statistics; packet radio networks; probability; quadrature amplitude modulation; 16-QAM constellation; AWGN channel; BER evaluation; Gray mapping; HSDPA; bit error rate; constellation rearrangement; high speed downlink packet access; logarithmic likelihood ratios; mapping diversity scheme; packet combining; piecewise Gaussian functions; probability density functions; wireless communications systems; AWGN channels; Automatic repeat request; Bit error rate; Diversity reception; Downlink; Maximum likelihood detection; Multiaccess communication; Probability density function; Protection; Quadrature amplitude modulation;
Conference_Titel :
Global Telecommunications Conference, 2006. GLOBECOM '06. IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
1-4244-0356-1
Electronic_ISBN :
1930-529X
DOI :
10.1109/GLOCOM.2006.62