DocumentCode :
2464347
Title :
A Fast Automatic Gain Control Scheme for 3GPP LTE TDD System
Author :
Jang, Jun Hee ; Choi, Hyung Jin
Author_Institution :
Sch. of Inf. & Commun. Eng., Sungkyunkwan Univ., Suwon, South Korea
fYear :
2010
fDate :
6-9 Sept. 2010
Firstpage :
1
Lastpage :
5
Abstract :
In this paper, we propose a fast AGC (Automatic Gain Control) scheme for 3GPP (3rd Generation Partnership Project) LTE (Long Term Evolution) TDD (Time Division Duplex) system. Since the received signal has a large signal power difference between uplink and downlink subframe in wireless communication systems using a TDD scheme, conventional AGC scheme cannot sufficiently adjust the AGC gain because the AGC gain cannot converge fast enough to properly respond. Therefore, conventional AGC scheme leads to increased AGC gain variation, and the received signal will be attenuated by large AGC gain variation. To overcome this limitation, we propose an AGC scheme based on the average amplitude ratio calculation which can not only effectively increase convergence speed of the AGC gain but also maintain the stability of AGC operation in LTE TDD system. By using extensive computer simulation in various channel environments, we show that the proposed method can obtain a good behavior in terms of convergence speed for LTE TDD system and verify that the proposed method is attractive and suitable for implementation with stable operation.
Keywords :
3G mobile communication; automatic gain control; time division multiplexing; 3GPP LTE TDD system; 3rd generation partnership project; automatic gain control; long term evolution; signal power difference; time division duplex system; Bit error rate; Convergence; Downlink; Gain; Gain control; Transient analysis; Transmitters;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vehicular Technology Conference Fall (VTC 2010-Fall), 2010 IEEE 72nd
Conference_Location :
Ottawa, ON
ISSN :
1090-3038
Print_ISBN :
978-1-4244-3573-9
Electronic_ISBN :
1090-3038
Type :
conf
DOI :
10.1109/VETECF.2010.5594461
Filename :
5594461
Link To Document :
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