A Low Complexity Method of Initial Ranging for IEEE 802.16e OFDMA Systems

被引：0
|
作者：
Lin, Yung-Chuan [1 ]
Su, Szu-Lin [1 ]
Wang, Hsin-Chih [1 ]
机构：
[1] Natl Cheng Kung Univ, Dept Elect Engn, Inst Comp & Commun Engn, Tainan 70101, Taiwan
来源：
11TH INTERNATIONAL CONFERENCE ON ADVANCED COMMUNICATION TECHNOLOGY, VOLS I-III, PROCEEDINGS,: UBIQUITOUS ICT CONVERGENCE MAKES LIFE BETTER! | 2009年
关键词：
Worldwide Interoperability for Microwave Access (WiMAX); initial ranging; ranging code; TTD;
D O I：
暂无
中图分类号：
TP31 [计算机软件];
学科分类号：
081202 ; 0835 ;
摘要：
Ranging is one of the most important processes in the uplink of the IEEE 802.16e OFDMA system. A ranging process includes initial ranging, periodic ranging, handover ranging, and contention bandwidth request. Initial ranging provides network entry, uplink synchronization, and system coordination. In the initial state of the transmission process, multiple users transmit randomly selected ranging code sets and BS identifies a specific user by using the ranging code identification and uplink synchronization by using the transmission delay estimation. In this paper, we discuss the details of initial ranging and propose an algorithm to carry out a successful ranging process. Performance results and the comparison of computational complexity with the traditional method are also presented. It is observed that the proposed algorithm can offer a better trade-off between computational complexity and performance.
引用
收藏
页码：1137 / 1141
页数：5
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