A path selection technique for two-hop relay systems with TDoA

Author

Woo, Kyung Soo ; Park, Chang Hwan ; Yoo, Hyun Il ; Kim, Jaekwon ; Han, Seung Hee ; Cho, Yong Soo

Author_Institution

Sch. of Electr. & Electron. Eng., Chung-Ang Univ., Seoul, South Korea

fYear

2009

fDate

13-16 Sept. 2009

Firstpage

2777

Lastpage

2781

Abstract

In this paper, the effect of the time difference of arrival (TDoA) on synchronous types or asynchronous types of OFDMA-based multi-hop relay (MR) systems is investigated. Effective SINRs for downlinks and uplinks are defined to measure the degree of interference due to TDoA in asymmetric MR systems. A path selection technique based on the effective SINR is then proposed to determine the optimal paths for the uplink and downlink independently. It is shown that asymmetric routing can improve the performance of OFDMA-based MR systems when the proposed technique is applied to the path selection of the uplink taking into account the effect of the TDoA.

Keywords

OFDM modulation; frequency division multiple access; time-of-arrival estimation; OFDMA-based multihop relay systems; asymmetric routing; path selection technique; time difference of arrival; two-hop relay systems; Downlink; Intersymbol interference; Land mobile radio cellular systems; Propagation delay; Relays; Resource management; Routing; Signal to noise ratio; Spread spectrum communication; Time difference of arrival;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 2009 IEEE 20th International Symposium on

Conference_Location

Tokyo

Print_ISBN

978-1-4244-5122-7

Electronic_ISBN

978-1-4244-5123-4

Type

conf

DOI

10.1109/PIMRC.2009.5450267

Filename

5450267