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On the Training of MIMO-OFDM Channels With Least Square Channel Estimation and Linear Interpolation
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- Authors
- Seung Joon Lee
- Issue Date
- 2008-02
- Citation
- IEEE Communications Letters, v.12, no.2, pp.100-102
- ISSN
- 1089-7798
- Publisher
- IEEE
- Language
- English
- Type
- Journal Article
- Abstract
- The effect of pilot arrangement is investigated on the performance of trained MIMO-OFDM channels where fading is time-flat in a block of coherence-time duration but frequencyselective. The MIMO-OFDM channel is considered to be trained by using least square channel estimation on pilot subcarriers and by applying linear interpolation on data subcarriers. The achievable rate of such a system is derived employing the generalized mutual information approach. Numerical examples are presented examining the optimal density of pilots in the twodimensional time-frequency domain. © 2008 IEEE.
- KSP Keywords
- Achievable rate, Channel estimation(CE), Least Squares(LS), Multiple input multiple output orthogonal frequency division multiplexing(MIMO-OFDM), Numerical examples, Square channel, Time duration, frequency domain(FD), generalized mutual information, linear interpolation, time frequency(T-F)