期刊名称：International Journal of Engineering and Computer Science
印刷版ISSN：2319-7242
出版年度：2015
卷号：4
期号：3
页码：11010-11013
出版社：IJECS
摘要：In Communication Systems, MIMO (Multiple Input Multiple Output) Channel have been introduced to achieve high data speedand better bit rate. The system becomes more efficient when OFDM (Orthogonal Frequency Division Multiplexing) is combined with MIMOto obtain high transmission rates, good quality of service and minimize the probability of error. Channel estimation is of great importance inMIMO-OFDM system. Channel estimation is used to estimate the transmitted signal using the corresponding receiver signal. Channelcapacity of MIMO-OFDM system is also increased by channel estimation. A main challenge in MIMO-OFDM system is retrieval of thechannel state information accurately. Channel state information is retrieved with the help of channel estimation i.e. all the channelsbetween the transmit antenna are accurately known. In this paper we describe the basic introduction of MIMO-OFDM system and surveythe different channel estimation techniques used in MIMO-OFDM system considering the various system parameters.
