TY - GEN
T1 - Finger assignment schemes for RAKE receivers with multi-way soft handover
AU - Choi, Seyeong
AU - Alouini, Mohamed Slim
AU - Qaraqe, Khalid A.
AU - Yang, Hong Chuan
PY - 2007
Y1 - 2007
N2 - We propose and analyze new finger assignment techniques that are applicable for RAKE receivers in the soft handover (SHO) region. More specifically, in the SHO region, the receiver uses by default only the strongest paths from the serving base station (BS) and only when the combined signal-to-noise ratio (SNR) falls below a certain pre-determined threshold, the receiver uses more resolvable paths from the target BSs to improve the performance. Relying on the previous results for the case of two-BS case, we consider the multi-BS situation by attacking the statistics of several correlated generalized selection combining (GSC) stages and provide closed-form expressions for the statistics of the output SNR. By investigating the tradeoff among the error performance, the path estimation load, and the SHO overhead, we show through numerical examples that the new schemes offer commensurate performance in comparison with more complicated GSC-based diversity systems while requiring a smaller estimation load and SHO overhead.
AB - We propose and analyze new finger assignment techniques that are applicable for RAKE receivers in the soft handover (SHO) region. More specifically, in the SHO region, the receiver uses by default only the strongest paths from the serving base station (BS) and only when the combined signal-to-noise ratio (SNR) falls below a certain pre-determined threshold, the receiver uses more resolvable paths from the target BSs to improve the performance. Relying on the previous results for the case of two-BS case, we consider the multi-BS situation by attacking the statistics of several correlated generalized selection combining (GSC) stages and provide closed-form expressions for the statistics of the output SNR. By investigating the tradeoff among the error performance, the path estimation load, and the SHO overhead, we show through numerical examples that the new schemes offer commensurate performance in comparison with more complicated GSC-based diversity systems while requiring a smaller estimation load and SHO overhead.
KW - Diversity techniques
KW - Fading channels
KW - Generalized selection combining (GSC)
KW - Performance analysis
KW - RAKE receiver
UR - http://www.scopus.com/inward/record.url?scp=36348932700&partnerID=8YFLogxK
U2 - 10.1109/WCNC.2007.92
DO - 10.1109/WCNC.2007.92
M3 - Conference contribution
AN - SCOPUS:36348932700
SN - 1424406595
SN - 9781424406593
T3 - IEEE Wireless Communications and Networking Conference, WCNC
SP - 474
EP - 478
BT - 2007 IEEE Wireless Communications and Networking Conference, WCNC 2007
T2 - 2007 IEEE Wireless Communications and Networking Conference, WCNC 2007
Y2 - 11 March 2007 through 15 March 2007
ER -