HOT SPOT RELIEF WITH EMBEDDED BEAM FOR CDMA SYSTEMS IN HAPS  

作　　者：Cheng Yuebo Jin Ronghong Jiang Ran Liu Bo 

机构地区：[1]Dept of Electronic Engineering, Shanghai Jiao tong University, Shanghai 200030, China

出　　处：《Journal of Electronics(China)》2006年第2期172-175,共4页电子科学学刊（英文版）

摘　　要：This paper proposes a novel micro/macro beam coverage scheme used in High Altitude Platform System (HAPS) Code Division Multiple Access (CDMA) systems. A relief of traffic burden in hot spot areas is achieved by embedding micro-beams into the macro-beams at the hot spot locations, together with appropriate power ratio control and user ratio control. The simulation results show that the hot spot problem can be relieved efficiently with the presented configuration, and a higher and more stable system capacity is expectable despite the variation of user distribution.This paper proposes a novel micro/macro beam coverage scheme used in High Altitude Platform System （HAPS） Code Division Multiple Access （CDMA） systems. A relief of traffic burden in hot spot areas is achieved by embedding micro-beams into the macro-beams at the hot spot locations, together with appropriate power ratio control and user ratio control. The simulation results show that the hot spot problem can be relieved efficiently with the presented configuration, and a higher and more stable system capacity is expectable despite the variation of user distribution.

关 键 词：Multi-beam configuration High Altitude Platform System （HAPS） On-board antenna Hot spot Code Division Multiple Access （CDMA） 

分 类 号：TN914.53[电子电信—通信与信息系统]