Browse > Article

Performance Analysis of OFDM M-ary QAM System with One Tap Equalizer in Rummler Fading Channel  

심재옥 (한밭대학교 정보통신공학과)
김언곤 (한밭대학교 정보통신공학과)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.6, no.2, 2002 , pp. 175-180 More about this Journal
Abstract
In this paper, the system performace with the convolution rode using a Viterbi decoding and the one tap LMS(Least Meam Square) equalizer applied to the OFDM(Orthogonal Frequency Division Multiplexing) system, is analyzed through computer simulation. DMRS(Digital Microwave Radio System)is modeled as Rummler fading channel. In Simulation result, we known that the coding system improved about 3.6dB~10.5dB when BER is 10 $^3$and b is 0.1~0.2 in case of 16QAM(Qurdrature Amplitude Modulation). Also, we known that was improved about 19.7dB when the b is 0.1 and was demanded about 10.5dB when the b is 0.2 in case of 64QAM. we known that the soft decision improved about 2~0.9dB when the b is 0.1~0.2 in case of 16QAM and about 3.3~7.8dB in case of 64QAM. In the equalizer system, efficiency improved from the case of that Eb/No is more than 13dB.
Keywords
Citations & Related Records
연도 인용수 순위
  • Reference
1 P. Balaban and V.P. Dewal 'Statistical distribution of parameters in a variable delay two-ray propagation model' GLOBECOM '89., IEEE, 1989, vol.1 pp. 59-64
2 John G, Proakis, Digital Communication, McGraw-Hill, 1999
3 정송모, 이상욱, '다경로 페이딩 채널에서 OFDM의 성능 분석', 한국통신학회 논문지, Vol.21, No.11, pp.2923-2941, Nov, 1996
4 R. E. Ziemer and W. H. Tranter, Principles of Communications, Wiley, pp. 497-504 1995
5 BERNARD SKLAR, Digital Communications, Prentice Hall, 1988
6 RICHARD VAN NEE, RAMJEE PRASAD, OFDM for Wireless Multimedia Communications, 2000
7 IEEE 802.11a, Part 11: Wireless LAN Medium Access Control(MAC) and Physical Layer(PHY) specification : High speed Physical Layer in the 5GHz band. 1999
8 Jack Kurzweil, An introduction digital communications, Wiley, 1999
9 이문호 저, 실용 디지털 통신, 영일 출판사, pp. 297-342, 1998