Efficient training design for estimation of channel, CFO, and receiver I/Q imbalance in MIMO-OFDM systems

Manasseh, Emmanuel; Ohno, Shûichi; Yamamoto, Toru

doi:10.1109/iscit.2013.6645883

Cited by 2 publications

(2 citation statements)

References 11 publications

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“…Various smart channel estimation (CE) [4][5][6][7][12][13][14][15] and channel tracking (CT) techniques [8][9][10][11] have been proposed to provide estimates on the channel impulse response (CIR) or channel frequency response (CFR). Many researches focus on efficient pilot design and allocation methods [6,7,12,13,[21][22][23][24][25][26] for separate FS and TS cases where [13,25] give excellent overview on pilot requirements. In general, the trend of assuming or relying on the prior knowledge of a) the length of CIR and b) Doppler rate, frequently become the bottleneck to perform well in real TS and FS fading channels, especially in wireless highways.…”

Section: Introductionmentioning

confidence: 99%

A Novel Pilot Expansion Approach for MIMO Channel Estimation and Tracking

Siyau

Prieto

et al. 2015

2015 IEEE International Conference on Ubiquitous Wireless Broadband (ICUWB)

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Enabling high practical mobility of MIMO-OFDM systems requires accurate channel estimation under severe frequency and time selective fading channels. Conventional methods rely on non-realistic approximations or result in impractical complexities. In this paper, a new practical trainingbased MIMO channel estimation scheme is presented. The new pilot bits designed from the 'Paley-Hadamard' matrix allows exploiting its orthogonal and 'Toeplitz-like' structures for minimising its pilot length. Additionally, a novel pilot expansion technique is proposed to estimate the length of the channel impulse response, by flexibly extending its pilot length as required to capture the number of multipath existed within the MIMO channel. The proposed pilot expansion enables to deduce the initial channel variation and its Doppler rate, which can be subsequently applied for MIMO channel tracking using decision feedback Kalman filter during the data payload.

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Section: Introductionmentioning

confidence: 99%

A Novel Pilot Expansion Approach for MIMO Channel Estimation and Tracking

Siyau

Prieto

et al. 2015

2015 IEEE International Conference on Ubiquitous Wireless Broadband (ICUWB)

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show abstract

“…Many researches focus on efficient pilot design and allocation methods [Barhumi I. et al 2003, Wang X. et al 2005, Biguesh M. et al 2006, Bogale, T.E. et al 2014, MA, J. et al 2011, Manasseh, E. et al 2013 for separate FS and TS cases where [Biguesh M. et al 2006] gives a solid overview on pilot requirements. In general, the trend of assuming or relying on the prior knowledge of a) the length of CIR and b) Doppler rate, frequently become the bottleneck to perform well in real TS and FS fading channels.…”

Section: Introductionmentioning

confidence: 99%

A Novel Pilot Expansion Approach for MIMO Channel Estimation

Siyau¹,

Li²,

Loo³

2015

ADCAIJ

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Pilot Expansion technique Paley-Hadamard matrix Feedback Kalman filter A training-based MIMO channel estimation scheme is presented to operate in severe frequency and time selective fading channels. Besides the new pilot bits designed from the 'Paley-Hadamard' matrix to exploit its orthogonal and 'Toeplitz-like' structures and minimising its pilot length, a novel pilot expansion technique is proposed to estimate the length of the channel impulse response, by flexibly extending its pilot length as required in order to capture the number of multipath existed within the MIMO channel. The pilot expansion can also help to deduce the initial channel variation and its Doppler rate which can be subsequently applied for MIMO channel tracking using decision feedback Kalman filter during the data payload.

show abstract

Efficient training design for estimation of channel, CFO, and receiver I/Q imbalance in MIMO-OFDM systems

Cited by 2 publications

References 11 publications

A Novel Pilot Expansion Approach for MIMO Channel Estimation and Tracking

A Novel Pilot Expansion Approach for MIMO Channel Estimation and Tracking

A Novel Pilot Expansion Approach for MIMO Channel Estimation

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