Behavior and performance of power controlled IS-95 reverse-link under softhandoff

The power controlled IS-95 reverse-link is studied. It is observed that rec eived signals from multiple links under soft handoff and power control are not independent but anticorrelated, The cause of the anticorrelation is inv estigated through analysis and simulation. It is shown that due to this ant icorrelation, the required signal-to-interference ratio (SIR) to achieve a given frame error rate can be similar to0.7 dB less than previously estimat ed based on the independence assumption. Such an observation also leads to a more accurate reverse-link capacity estimate. Finally, it is pointed out that by using a postselection power control configuration an additional rap acity increase of up to 11% is obtained.