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송재철 ( Jai-chul Song ) 한국고등직업교육학회 2000 한국고등직업교육학회 학술대회 논문집 Vol.2000 No.8
This paper presents various blind equalization algorithms called CMA, DM-CMA, SGA-DM-CMA, MCMA, DM-MCMA and SGA-DM-MCMA. This paper discuss some of advantages or disadvantages provided by these algorithms before applied to the practical high-order QAM system. From the results of simulation, we can verify that all of these algorithms discussed in this paper operate very well, Among the various algorithms, SGA-DM-MCMA algorithm shows best performance in terms of ISI characteristics.
송재철 ( Jai-chul Song ) 한국고등직업교육학회 2000 한국고등직업교육학회논문집 Vol.1 No.4
This paper presents various blind equalization algorithms called CMA, DM-CMA, SGA-DM-CMA, MCMA, DM-MCMA and SGA-DM-MCMA. This paper discuss some of advantages or disadvantages provided by these algorithms before applied to the practical high-order QAM system. From the results of simulation, we can verify that all of these algorithms discussed in this paper operate very well, Among the various algorithms, SGA-DM-MCMA algorithm shows best performance in terms of ISI characteristics.
멀티미디어 환경에서 LAN성능향상을 위한 토폴로지 성능분석
조병록 ( Byung-lok Cho ),임성진 ( Sung-jin Lim ),송재철 ( Jai-chul Song ) 한국인터넷정보학회 2001 인터넷정보학회논문지 Vol.2 No.5
본 논문에서는 멀티미디어 환경에서 La치 성능향상을 위하여 ATM-LAN으로 구성하여 토폴로지에 따라 네트워크를 분석한다. 노드 변화에 따라 스타, 링, 메쉬 토폴로지에서 Email, FTP, Http 서버의 작업처리 시간을 분석한다. 토폴로지에 따라 Email 송, 수신율의 변화와 Email, FTP, Http서버의 부하량을 분석한다. 본 논문에서 구성한 네트워크는 단지 어떤 토폴로지에서 서버에 걸리는 부하를 최소로 할 수 있는가를 고찰할 수 있었다. In this paper, we analyze networks in accordance with topology which consists of ATM-LAN in order to enhance performance in multimedia environment. We analyze job processing time of Email, FTP and Http server for variance of node in star, ring and mesh topology. We analyze a load factor of Email, FTP and Http server and variance of sending/receiving rate for various topology. We examined that the constituent networks in this paper can minimize load of server in any other topology.