Author(s): Chen, YL (Chen, Young-Long); Wang, JW (Wang, Jyu-Wei); Lin, YS (Lin, Yung- Sheng); Wen, JH (Wen, Jyh-Horng)
Title: Combined fuzzy-based rate management and selective power control for multimedia CDMA cellular systems
Source: WIRELESS PERSONAL COMMUNICATIONS, 46 (3): 269-284 AUG 2008 Language: English
Document Type: Article
Author Keywords: QoS; transmission rate; power control; FLC; SIR
KeyWords Plus: MOBILE SYSTEMS; RADIO SYSTEMS; PERFORMANCE; LOGIC Abstract: Power control mechanisms are essential for CDMA wireless communication systems to enhance user capacity. In this paper, we propose a novel power control scheme which combines transmission rate management with power adjustments for multimedia CDMA cellular systems. In the proposed scheme, a fuzzy logic controller (FLC) is first used to dynamically infer a suitable transmission rate for each service. Then a selective power control (SPC) scheme is used to adjust the transmission power for each service in order to maintain an acceptable signal-to-interference ratio (SIR). Numerical results show that the proposed scheme outperforms the original SPC and the Lagrangian relaxation technique and power control (LRPC) methods in outage probability, average transmission rate, probability of unsuccessful transmission, and probability of changes in transmission rates.
Addresses: [Wen, Jyh-Horng] Tunghai Univ, Dept Elect Engn, Taichung 40704, Taiwan; [Lin, Yung-Sheng] Quanta Comp Inc, Tao Yuan, Taiwan; [Wang, Jyu-Wei] Asia Univ, Dept Comp &
Commun Engn, Taichung, Taiwan; [Chen, Young-Long] Chien Kuo Technol Univ, Dept Elect Engn, Changhua, Taiwan; [Chen, Young-Long; Lin, Yung-Sheng; Wen, Jyh-Horng] Natl Chung Cheng Univ, Dept Elect Engn, Chiayi, Taiwan
Reprint Address: Wen, JH, Tunghai Univ, Dept Elect Engn, Taichung 40704, Taiwan.
E-mail Address: [email protected]; [email protected]; [email protected];
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Cited Reference Count: 17 Times Cited: 0
Publisher: SPRINGER
Publisher Address: VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
ISSN: 0929-6212
DOI: 10.1007/s11277-007-9433-6
29-char Source Abbrev.: WIREL PERS COMMUN ISO Source Abbrev.: Wirel. Pers. Commun.
Source Item Page Count: 16
Subject Category: Telecommunications ISI Document Delivery No.: 316EG
