Optimal pilot design for channel estimation in single/multicarrier block transmission systems

Majumder, Manjeer; Kudeshia, Ankit; Jagannatham, Aditya K.

doi:10.1109/ncc.2017.8077049

Cited by 2 publications

(4 citation statements)

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“…• To make the BER analysis tractable, in case of ZP systems, we have introduced Overlap-add (OLA) operation at the receiver. This significantly reduces the complexity of SC-ZP and MC-ZP BER analyses and renders it similar to that of their CP counterparts, which is not present in [15]. Among other achievements, an equivalence is determined between zero padded systems and ones employing a cyclic prefix.…”

Section: B Motivation and Contributionsmentioning

confidence: 97%

“…A part of this work was presented in the conference paper in [15]. The significant additional contributions of this work are described below…”

Section: B Motivation and Contributionsmentioning

confidence: 99%

“…Further, the theoretical BER analysis is significantly more involved and in-depth. • Additionally, we have also studied the impact of channel estimation error on the BER analysis, which is lacking in [15]. The channel estimate is obtained by employing the proposed optimal pilot design scheme.…”

Section: B Motivation and Contributionsmentioning

confidence: 99%

“…where p mc = F H N p is the N × 1 transmitted pilot vector obtained after the inverse discrete Fourier transform (IDFT) operation at the transmitter. An alternative formulation [15] for the above model after FFT demodulation at the receiver is given as…”

Section: B Mc-cp Systemsmentioning

confidence: 99%

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Optimal Pilot Design and Error Rate Analysis of Block Transmission Systems in the Presence of Channel State Information (CSI) Estimation Error

Majumder

Jagannatham

2020

IEEE Access

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This work proposes novel techniques toward the design of optimal pilot sequences to perform channel estimation in block transmission systems over wideband frequency selective wireless fading channels. The framework developed is based on minimization of the Bayesian Cramér-Rao bound (BCRB) for the mean squared error (MSE) of the channel state information (CSI) estimate. Optimal pilot signals are determined for the four predominant classes of block transmission systems, viz. single carrier zero padding (SC-ZP), multi-carrier zero padding (MC-ZP), single carrier cyclic prefix (SC-CP) and multicarrier cyclic prefix (MC-CP) systems. This makes the techniques developed general in nature and thus applicable in a wide variety of block transmission systems. As part of this study, succinct expressions and results are also derived to characterize the error rate performance, incorporating also the effect of CSI estimation error resulting due to the proposed algorithms. Finally, numerical results obtained via Monte-Carlo simulation are presented to illustrate and compare the CSI acquisition performance of optimal pilot designs with that of conventional designs and also validate the theoretical analysis for the error rate performance. INDEX TERMS Block transmission system, mean square error (MSE), bit error rate (BER), diversity, minimum mean square error (MMSE), maximum likelihood (ML), zero forcing (ZF)

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Section: B Motivation and Contributionsmentioning

confidence: 97%

“…A part of this work was presented in the conference paper in [15]. The significant additional contributions of this work are described below…”

Section: B Motivation and Contributionsmentioning

confidence: 99%

Section: B Motivation and Contributionsmentioning

confidence: 99%

Section: B Mc-cp Systemsmentioning

confidence: 99%

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