Transmitter-Receiver Designs for Highly Frequency Selective Channels in MIMO FBMC Systems

This paper studies the MIMO applicability to filter bank based multicarrier (FBMC) modulations for low coherence bandwidth channels. Under these conditions the channel frequency response cannot be modeled flat at a subcarrier level. This implies that the techniques originally devised for OFDM do not...

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Vydané v:IEEE transactions on signal processing Ročník 60; číslo 12; s. 6519 - 6532
Hlavní autori: Caus, M., Perez-Neira, A. I.
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: New York, NY IEEE 01.12.2012
Institute of Electrical and Electronics Engineers
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Predmet:
Applied sciences
Channel estimation
Coding, codes
Complexity theory
Detection, estimation, filtering, equalization, prediction
Equalizers
Exact sciences and technology
filter bank based multicarrier
Information, signal and communications theory
Interference
MIMO
MIMO precoder/decoder design
Modulation, demodulation
Multiplexing
Noise measurement
OFDM
Receivers
Signal and communications theory
Signal, noise
Studies
Telecommunications and information theory
Performance evaluation
Parameter estimation
Bit error rate
Transmitter
Subcarrier
Frequency selection
Channel estimation
Filter bank
Frequency response
MIMO precoder/decoder design
Fading channels
MIMO system
Subband decomposition
Coding circuit
Multicarrier
Orthogonality
Multicarrier modulation
Simulation
filter bank based multicarrier
Coherence
Orthogonal frequency division multiplexing
Signal processing
Open market
Signal to interference plus noise ratio
Figure of merit
ISSN:1053-587X, 1941-0476
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Shrnutí:This paper studies the MIMO applicability to filter bank based multicarrier (FBMC) modulations for low coherence bandwidth channels. Under these conditions the channel frequency response cannot be modeled flat at a subcarrier level. This implies that the techniques originally devised for OFDM do not restore the orthogonality between subcarriers when they are directly applied to FBMC. Aiming at circumventing this problem we propose the design of two MIMO FBMC schemes, which are based on a new subband processing. The figures of merit that govern the design of the first and second scheme are the signal to leakage plus noise ratio (SLNR) and the signal to interference plus noise ratio (SINR), respectively. However, we do not restrict the analysis to the design of a new subband processing but we also carry out an asymptotic analysis of the complexity as well as tackle the problem of estimating the channel. Simulation-based results have demonstrated that the addressed solutions clearly outperform previous MIMO FBMC schemes in terms of BER. In comparison to OFDM, the devised techniques are able to remain competitive even if the knowledge of the channel state information is not perfect. In those scenarios where the cyclic prefix (CP) length is not sufficiently large to avoid inter block interference, the proposed designs are able to reduce the BER. However, the price that should be paid is the increase of the complexity.
Bibliografia:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 14
ISSN:1053-587X
1941-0476
DOI:10.1109/TSP.2012.2217133