Adaptive Channel Assignment and Pilot-Less Channel Tracking Method for OFDMA Systems

被引：0

作者：

Sakamoto, Kazumitsu ^{[1
]}

Muta, Osamu ^{[1
]}

Akaiwa, Yoshihiko ^{[2
]}

Giridhar, K. ^{[2
,3
]}

Furukawa, Hiroshi ^{[1
]}

机构：

[1] Kyushu Univ, Grad Sch Informat Sci & Elect Engn, Nishi Ku, 744 Motooka, Fukuoka 8190395, Japan

[2] Univ Elect Commun, Grad Sch, Tokyo 182, Japan

[3] Indian Inst Technol, Dept Elect Engn, Madras 600036, Tamil Nadu, India

来源：

2010 4TH INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING AND COMMUNICATION SYSTEMS (ICSPCS) | 2010年

关键词：

OFDMA; Decision-directed channel tracking; Channel assignment; ALLOCATION;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

OFDMA (Orthogonal frequency division multiple access) based systems have been considered as a candidate for future wireless communication systems. In such a system, it is important to provide high data rate services for users with high mobility. For this purpose, decision-directed channel tracking (DDCT) techniques have been investigated for OFDM systems in high mobility environments. The performance of the DDCT in OFDMA systems depends on the assigned channel condition, and therefore it is important to allocate a proper channel to each user. The purpose of this paper is to propose an adaptive channel assignment method which enhances the DDCT improvement in an OFDMA system, where the former numbered resource blocks (RBs) in OFDMA frame are preferentially allocated to the users moving at a high speed. Computer simulation results show that the proposed method is effective in improving throughput performance of OFDMA systems in a high Doppler frequency condition.

引用

页数：6

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