전자공학회논문지S (Journal of the Korean Institute of Telematics and Electronics S)
- 제35S권10호
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- Pages.19-26
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- 1998
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- 1226-5837(pISSN)
협대역 이동통신시스템에서 TTIB를 이용한 페이딩 보상 시스템의 설계 및 구현
Design and Implementation of a TTIB Fading Compensation Systems for Narrowband Mobile Communication Systems
- Lee, Byeong-Ro (Dept. of Elec. Eng., Gyeongsang Nat'l Univ.) ;
- Lim, Young-Hoe (Dept. of Elec. Eng., Gyeongsang Nat'l Univ.) ;
- Lim, Dong-MIn (Dept. of Elec. Eng., Gyeongsang Nat'l Univ.)
- 발행 : 1998.10.01
초록
본 논문에서는 TTIB SSB 방식을 이용한 협대역 이동통신시스템에서 페이딩 보상 시스템의 설계 및 구현에 관한 연구를 수행하였다. 다중경로 페이딩 갖는 이동통신채널은 무선통신시스템의 성능을 필연적으로 제한하게 한다. 이러한 다중경로 페이딩은 TTIB SSB 방식에서 파일럿 톤을 이용하여 보상할 수 있다. DSP(digital signal processor)를 이용하여 TTIB SSB 송
In this paper, we studied the design and implementation of fading compensation systems at aspects of narrowband mobile communication using TTIB SSB. The mobile radio channel with multipath fading places fundamental limitations on the performance of wireless communication systems. The multipath fading is compensated using pilot tone in TTIB SSB. The TTIB transceiver was implemented using the prevailing digital signal processing (DSP) techniques and compensation for the multipath fading was incorporated in the receiver in the form of DSP algorithm. In order to evaluate fading compensation performance in TTIB transceiver, we first used computer simulation. In the simulation results, we found that the TTIB transceiver could compensate for the multipath fading as expected. Second, we carried out some experiments on TTIB transceiver implementation with DSP boards and later with hardwares including RF circuits with center frequency of 145MHz. Through these experiments, we found that fading compensation performance in TTIB transceiver was almost as good as that obtained from simulation.
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