Optimum TDD downlink/uplink time ratio to minimize interference in coexisting FDD downlink

Author

Seo, Younghoon ; Kim, Young-Soo

Author_Institution

Dept. of Electr. Eng., Pohang Univ. of Sci. & Technol. (POSTECH), Pohang, South Korea

fYear

2012

fDate

15-17 Oct. 2012

Firstpage

540

Lastpage

541

Abstract

Orthogonal frequency division multiple access (OFDMA) based frequency division duplexing (FDD) systems can coexist with time division duplexing (TDD) systems in the same geographical area operating in adjacent frequency bands. However, this may cause adjacent channel interference and the throughput loss in the FDD systems. Through the interference modeling, it was found that the optimum downlink to uplink transmission time ratio of the TDD system to minimize the throughput loss in adjacent FDD downlink is between about 4:6 and 5:5.

Keywords

OFDM modulation; frequency division multiple access; interference suppression; minimisation; radio links; time division multiplexing; wireless channels; FDD downlink; OFDMA; TDD systems; adjacent channel interference; frequency division duplexing systems; interference minimization; interference modeling; optimum TDD downlink-uplink time ratio; optimum downlink-to-uplink transmission time ratio; orthogonal frequency division multiple access; throughput loss minimization; time division duplexing systems; Downlink; Frequency conversion; Interchannel interference; OFDM; Throughput; Coexistance; FDD; Interference; OFDMA; TDD;

fLanguage

English

Publisher

ieee

Conference_Titel

ICT Convergence (ICTC), 2012 International Conference on

Conference_Location

Jeju Island

Print_ISBN

978-1-4673-4829-4

Electronic_ISBN

978-1-4673-4827-0

Type

conf

DOI

10.1109/ICTC.2012.6387193

Filename

6387193