On the training of MIMO-OFDM channels with least square channel estimation and linear interpolation

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 frequency-selective. The MIMO-OFDM channel is considered to be trained by using least square channel estimation on pilot subcarriers an...

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Vydáno v:IEEE communications letters Ročník 12; číslo 2; s. 100 - 102
Hlavní autor: Seung Joon Lee, Seung Joon Lee
Médium: Journal Article
Jazyk:angličtina
Vydáno: New York, NY IEEE 01.02.2008
Institute of Electrical and Electronics Engineers
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:
Applied sciences
Blocking
Channel estimation
Channels
Data subcarriers
Density
Detection, estimation, filtering, equalization, prediction
Estimation error
Exact sciences and technology
Fading
Frequency estimation
Information, signal and communications theory
Interpolation
Least squares approximation
Least squares method
MIMO
Multiplexing
Mutual information
OFDM
Optimization
Orthogonal Frequency Division Multiplexing
Pilots
Receiving antennas
Signal and communications theory
Signal, noise
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Transmission and modulation (techniques and equipments)
Performance evaluation
Fading
MIMO system
Parameter estimation
Linear interpolation
Time frequency domain method
OFDM
least square channel estimation
Two dimensional model
Subcarrier
multiple input multiple output
Learning
Frequency selection
Generalized mutual information
Least squares method
Channel estimation
Coherence
Orthogonal frequency division multiplexing
Numerical simulation
Mutual information
ISSN:1089-7798, 1558-2558
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Popis
Shrnutí: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 frequency-selective. 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 two-dimensional time-frequency domain.
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ISSN:1089-7798
1558-2558
DOI:10.1109/LCOMM.2008.071566