Analysis of downlink power allocation during soft handover in the CDMA system

被引：0
|
作者：
Li, J [1 ]
Fan, C [1 ]
Zhang, X [1 ]
Yang, DC [1 ]
机构：
[1] Beijing Univ Posts & Telecommun, Sch Telecommun Engn, Beijing 100876, Peoples R China
来源：
PERFORMANCE CHALLENGES FOR EFFICIENT NEXT GENERATION NETWORKS, VOLS 6A-6C | 2005年 / 6A-6C卷
关键词：
D O I：
暂无
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
Soft handover is a key feature of the CDMA system, while downlink power allocation among the active cells is a key issue in the soft handover, which would affect the soft handover performance greatly. In this paper, a mathematical model is proposed to analyze the power allocation problem. Besides, several improved power allocation algorithms are proposed, and they can be considered as the improvement of SSDT (Site Selective Diversity Transmit), or a compromise between the conventional power allocation scheme and SSDT. Based on the proposed mathematical model, simulation is performed to evaluate the power allocation algorithms. According to the simulation results, one of the improved algorithms, called VRT (Variable Relative Threshold) algorithm, shows the best overall system performance, and it is especially suitable for the CDMA system under high traffic load.
引用
收藏
页码：183 / 192
页数：10
相关论文
共 50 条
  • [21] Adjustment loop transmit power control during soft handover in CDMA cellular systems
    Hamabe, K
    [J]. IEEE VEHICULAR TECHNOLOGY CONFERENCE, FALL 2000, VOLS 1-6, PROCEEDINGS: BRINGING GLOBAL MOBILITY TO THE NETWORK AGE, 2000, : 1519 - 1523
  • [22] An optimum rate/power allocation scheme for downlink in hybrid CDMA/TDMA cellular system
    Vannithamby, R
    Sousa, ES
    [J]. IEEE VEHICULAR TECHNOLOGY CONFERENCE, FALL 2000, VOLS 1-6, PROCEEDINGS: BRINGING GLOBAL MOBILITY TO THE NETWORK AGE, 2000, : 1734 - 1738
  • [23] Downlink soft handover gain in CDMA cellular network with cross-correlated shadowing
    Yang, XJ
    Ghaheri-Niri, S
    Tafazolli, R
    [J]. IEEE 54TH VEHICULAR TECHNOLOGY CONFERENCE, VTC FALL 2001, VOLS 1-4, PROCEEDINGS, 2001, : 276 - 280
  • [24] Optimum power/rate allocation for minimum delay in CDMA downlink
    Choi, KH
    Shin, SYK
    [J]. MOBILE COMMUNICATIONS, 2003, 2524 : 294 - 303
  • [25] Enhanced power control strategy for downlink soft handover in WCDMA systems
    Hamouda, Soumaya
    Melki, Mohamed
    Godlewski, Philippe
    Tabbane, Sami
    [J]. MOBILE COMPUTING AND WIRELESS COMMUNICATION INTERNATIONAL CONFERENCE, PROCEEDINGS, 2007, : 124 - +
  • [26] Code allocation schemes for the downlink of a TD-CDMA system
    Ammari, S
    Wautier, A
    Braik, A
    Gattoufi, L
    [J]. 13TH IEEE INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS, VOL 1-5, PROCEEDINGS: SAILING THE WAVES OF THE WIRELESS OCEANS, 2002, : 2097 - 2101
  • [27] Soft handover algorithm analysis of overlaid cellular in CDMA system based on speed and direction
    Zhu, Zhiqiang
    Xu, Guangyin
    Guo, Junqiang
    Fan, Mingqu
    [J]. DYNAMICS OF CONTINUOUS DISCRETE AND IMPULSIVE SYSTEMS-SERIES B-APPLICATIONS & ALGORITHMS, 2006, 13 : 753 - 756
  • [28] Performance of uplink power control during soft handover in WCDMA system
    Abdulaziz, JS
    Ismail, M
    Hasbi, AM
    Ibrahim, MY
    Ahmad, N
    [J]. 2005 13th IEEE International Conference on Networks Jointly held with the 2005 7th IEEE Malaysia International Conference on Communications, Proceedings 1 and 2, 2005, : 812 - 816
  • [29] Downlink power allocation for multi-class CDMA wireless networks
    Lee, JW
    Mazumdar, RR
    Shroff, NB
    [J]. IEEE INFOCOM 2002: THE CONFERENCE ON COMPUTER COMMUNICATIONS, VOLS 1-3, PROCEEDINGS, 2002, : 1480 - 1489
  • [30] Joint power and rate allocation for the downlink in wireless CDMA data networks
    Yin, ZM
    Xie, JY
    [J]. PIMRC 2003: 14TH IEEE 2003 INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS PROCEEDINGS, VOLS 1-3 2003, 2003, : 326 - 330
12345