Distributed power control in CDMA cellular systems

Distributed Power Control in CDMA Cellular System

In wireless cellular communication, it is essential to nd e ective means of power control of signals received from randomly dispersed users within one cell. E ective power control will heavily impact the system capacity. Distributed power control (DPC) is a natural choice for such purpose, because unlike centralized power control, DPC does not require extensive computational power. Distributed ...

Distributed Power Control in CDMA Cellular Svstems

Chaouki Abdallah Electrical & Computer Engineering Department The University of New Mexico Albuquerque, New Mexico 87131 USA E-mail: [email protected] In wireless cellular communication, it is essential to find effective means for power control of signals received from randomly dispersed users within one cell. Effective power control will heavily impact the system capacity. Distributed power...

Power Control in CDMA Cellular Systems

Open-loop power control error in cellular CDMA overlay systems

Adaptive power control has widely been used in DS/CDMA systems to overcome the so-called “near-far” problem. This paper studies the adaptive open-loop power control of a cellular CDMA system, which is overlaid in the downlink by a narrowband signal. The effects of downlink power allocation schemes to power control error in the presence of narrowband interference are analyzed. In order to get a ...

Macrodiversity power control in hierarchical CDMA cellular systems

Hierarchical code division multiple access (CDMA) cellular systems, consisting of macrocells with underlying microcells, are studied. We seek power control schemes which will allow both hierarchical layers to share the same spectrum. For the reverse link, hierarchical maximal ratio combining (HMRC) is applied where each mobile station (MS) is received and coherently combined by base stations (B...