Title :
SSDT-site selection diversity transmission power control for CDMA forward link
Author :
Furukawa, Hiroshi ; Harnage, K. ; Ushirokawa, Akihisa
Author_Institution :
Networking Res. Labs., NEC Corp., Kawasaki, Japan
Abstract :
This paper proposes site selection diversity transmission power control (SSDT), an advanced form of transmission power control (TPC) for CDMA forward link, SSDT realizes site selection transmission diversity instead of full site transmission diversity used in conventional TPC during soft hand over (SHO) mode. The major intention of the site selection is to mitigate interference caused by multiple site transmission done at conventional TPC. Simulation results indicated that the higher the capacity gain of SSDT is in comparison to conventional TPC, the lower the mobile station (MS) speed is. Capacity gain of about 55% for a pedestrian MS is achieved by SSDT in case of MS reception diversity and 6 finger RAKE reception. This paper also presents the benefits of SSDT in terms of its high path capturing efficiency and the mitigation of power imbalance among active BSs due to TPC command reception error.
Keywords :
channel capacity; code division multiple access; digital simulation; diversity reception; multiuser channels; power control; radio links; radio transmitters; radiofrequency interference; telecommunication control; CDMA forward link; RAKE reception; SSDT; TPC command reception error; capacity gain; cellular radio; high path capturing efficiency; interference mitigation; mobile station speed; multiple site transmission; power imbalance mitigation; simulation results; site selection diversity transmission power control; soft handover mode; Base stations; Electronic mail; Fingers; Interference; Laboratories; Multiaccess communication; National electric code; Power control; Power generation; Power system reliability;
Journal_Title :
Selected Areas in Communications, IEEE Journal on
