Effects of Carrier Frequency Offset and Channel Estimation Errors on the Performance of MIMO-OFDM Systems in Spatially Correlated Channels |
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| Authors: | Zi-Wei Zheng |
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| Affiliation: | 1.College of Information Science and Engineering,Ningbo University,Ningbo,People’s Republic of China;2.Nation Mobile Communications Research Laboratory,Southeast University,Nanjing,People’s Republic of China;3.College of Information Engineering,Dalian Maritime University,Dalian,People’s Republic of China |
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| Abstract: | As an effective technique for combating multipath fading and for high-bit-rate transmission over wireless channels, orthogonal
frequency division multiplexing (OFDM) is extensively used in high-rate wireless communication systems, such as, the wireless
local area network (WLAN) and the digital television terrestrial broadcasting (DTTB) systems, to support high performance
bandwidth-efficient multimedia services. Multiple antennas and transmit or receive diversity, multiple-input multiple-output
orthogonal frequency division multiplexing (MIMO-OFDM), can be used to improve error performance and capacity of wireless
systems. In this paper, we consider the effects of carrier frequency offset and channel estimation errors on the performance
of MIMO-OFDM systems in spatially correlated channels. Theoretical calculations and computer simulations are done to analyze
the performance degradation of MIMO-OFDM systems in spatially correlated channels due to carrier frequency offset and channel
estimation errors, and the theoretical and simulated results match well. |
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