Finger Replacement Method for Rake Receivers in the Soft Handover Region

Abstract

Abstract-We propose and analyze a new finger replacement technique that is applicable for RAKE receivers in the soft handover (SHO) region. More specifically, the receiver uses in the SHO region by default the strongest paths from the serving base station (BS) and only when the combined signal-to-noise ratio falls below a certain pre-determined threshold, the receiver uses more resolvable paths from the target BS to improve the performance. Instead of changing the configuration for all fingers, the receiver just compares the sum of the weakest paths out of the currently connected paths from the serving BS with the sum of the strongest paths from the target BS and selects the better group. Using accurate statistical analysis, we investigate in this letter the tradeoff between error performance, average number of required path comparisons, and SHO overhead offered by this newly proposed scheme.

Joint Statistics of Partial Sums of Ordered i.n.d. Gamma Random Variables

“…gamma-fading environments. Consequently, this expansion enables sophisticated analysis of various research topics, including advanced diversity combining [16,17], channel adaptive transmission [18], multiuser scheduling [13], and advanced RAKE receivers [47][48][49][50], all within the framework of the gamma distribution. This enhancement broadens the potential applications of the mathematical framework introduced in this work, allowing for comprehensive analysis of wireless communication systems in diverse environments.…”