Title :
Behavior and performance of power controlled IS-95 reverse-link under soft handoff
Author :
Ling, Fuyun ; Love, Robert ; Wang, Michael Mao ; Brown, Tyler ; Fleming, Phil ; Xu, Hua
Author_Institution :
Qualcomm Inc., San Diego, CA, USA
fDate :
9/1/2000 12:00:00 AM
Abstract :
The power controlled IS-95 reverse-link is studied. It is observed that received signals from multiple links under soft handoff and power control are not independent but anticorrelated. The cause of the anticorrelation is investigated through analysis and simulation. It is shown that due to this anticorrelation, the required signal-to-interference ratio (SIR) to achieve a given frame error rate can be ~0.7 dB less than previously estimated 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 capacity increase of up to 11% is obtained
Keywords :
cellular radio; channel capacity; code division multiple access; multiuser channels; personal communication networks; power control; radio links; radiofrequency interference; spread spectrum communication; telecommunication control; telecommunication standards; DS-CDMA; IS-95 standard; SIR; anticorrelation; code division multiple access; digital mobile cellular communications; frame error rate; multiple links; performance; personal communication systems; postselection power control; power controlled IS-95 reverse-link; received signals; reverse-link capacity estimate; signal-to-interference ratio; simulation; soft handoff; Analytical models; Base stations; Code standards; Communication standards; Error analysis; Mobile communication; Multiaccess communication; Power control; Power measurement; Signal processing;
Journal_Title :
Vehicular Technology, IEEE Transactions on
