Dynamic pilot allocation channel estimation with spatial multiplexing for MIMO-OFDM systems

Li Li; Rodrigo C. De Lamare; Alister G. Burr

doi:10.1109/VETECS.2011.5956755

Dynamic pilot allocation channel estimation with spatial multiplexing for MIMO-OFDM systems

Li Li^*, Rodrigo C. De Lamare, Alister G. Burr

^*Corresponding author for this work

Electronic Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

In this paper, we investigate a dynamic pilot allocation algorithm for Discrete Fourier Transform (DFT)-based channel estimation in MIMO-OFDM systems, which employs feedback to adapt pilot locations to mobile channels for different receivers (ZF-linear, ZF-SIC, MMSE-linear, MMSE-SIC). The pilot allocation is dynamically controlled by feedback of the pilot allocation index so to optimize SER performance. Furthermore, mathematical expressions of the instantaneous signal to interference and noise ratio (SINR) in the presence of channel estimation error for different receivers are derived to obtain the error probabilities of data subcarriers through an approximate error probability function for MPSK modulation. The pilot locations are based on these error probabilities to avoid data symbols transmitted over these subcarriers with high error probabilities instead of pilots over them. Simulation results are provided to illustrate the performance gains achieved with these receivers by this dynamic pilot allocation.

Original language	English
Title of host publication	2011 IEEE 73rd Vehicular Technology Conference, VTC2011-Spring - Proceedings
DOIs	https://doi.org/10.1109/VETECS.2011.5956755
Publication status	Published - 2011
Event	2011 IEEE 73rd Vehicular Technology Conference, VTC2011-Spring - Budapest, Hungary Duration: 15 May 2011 → 18 May 2011

Publication series

Name	IEEE Vehicular Technology Conference
ISSN (Print)	1550-2252

Conference

Conference	2011 IEEE 73rd Vehicular Technology Conference, VTC2011-Spring
Country/Territory	Hungary
City	Budapest
Period	15/05/11 → 18/05/11

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10.1109/VETECS.2011.5956755

Cite this

@inproceedings{a3467800b3cb4d3ea9523a5cb772e3ad,

title = "Dynamic pilot allocation channel estimation with spatial multiplexing for MIMO-OFDM systems",

abstract = "In this paper, we investigate a dynamic pilot allocation algorithm for Discrete Fourier Transform (DFT)-based channel estimation in MIMO-OFDM systems, which employs feedback to adapt pilot locations to mobile channels for different receivers (ZF-linear, ZF-SIC, MMSE-linear, MMSE-SIC). The pilot allocation is dynamically controlled by feedback of the pilot allocation index so to optimize SER performance. Furthermore, mathematical expressions of the instantaneous signal to interference and noise ratio (SINR) in the presence of channel estimation error for different receivers are derived to obtain the error probabilities of data subcarriers through an approximate error probability function for MPSK modulation. The pilot locations are based on these error probabilities to avoid data symbols transmitted over these subcarriers with high error probabilities instead of pilots over them. Simulation results are provided to illustrate the performance gains achieved with these receivers by this dynamic pilot allocation.",

author = "Li Li and {De Lamare}, {Rodrigo C.} and Burr, {Alister G.}",

year = "2011",

doi = "10.1109/VETECS.2011.5956755",

language = "English",

isbn = "9781424483310",

series = "IEEE Vehicular Technology Conference",

booktitle = "2011 IEEE 73rd Vehicular Technology Conference, VTC2011-Spring - Proceedings",

note = "2011 IEEE 73rd Vehicular Technology Conference, VTC2011-Spring ; Conference date: 15-05-2011 Through 18-05-2011",

}

Li, L, De Lamare, RC & Burr, AG 2011, Dynamic pilot allocation channel estimation with spatial multiplexing for MIMO-OFDM systems. in 2011 IEEE 73rd Vehicular Technology Conference, VTC2011-Spring - Proceedings., 5956755, IEEE Vehicular Technology Conference, 2011 IEEE 73rd Vehicular Technology Conference, VTC2011-Spring, Budapest, Hungary, 15/05/11. https://doi.org/10.1109/VETECS.2011.5956755

TY - GEN

T1 - Dynamic pilot allocation channel estimation with spatial multiplexing for MIMO-OFDM systems

AU - Li, Li

AU - De Lamare, Rodrigo C.

AU - Burr, Alister G.

PY - 2011

Y1 - 2011

N2 - In this paper, we investigate a dynamic pilot allocation algorithm for Discrete Fourier Transform (DFT)-based channel estimation in MIMO-OFDM systems, which employs feedback to adapt pilot locations to mobile channels for different receivers (ZF-linear, ZF-SIC, MMSE-linear, MMSE-SIC). The pilot allocation is dynamically controlled by feedback of the pilot allocation index so to optimize SER performance. Furthermore, mathematical expressions of the instantaneous signal to interference and noise ratio (SINR) in the presence of channel estimation error for different receivers are derived to obtain the error probabilities of data subcarriers through an approximate error probability function for MPSK modulation. The pilot locations are based on these error probabilities to avoid data symbols transmitted over these subcarriers with high error probabilities instead of pilots over them. Simulation results are provided to illustrate the performance gains achieved with these receivers by this dynamic pilot allocation.

AB - In this paper, we investigate a dynamic pilot allocation algorithm for Discrete Fourier Transform (DFT)-based channel estimation in MIMO-OFDM systems, which employs feedback to adapt pilot locations to mobile channels for different receivers (ZF-linear, ZF-SIC, MMSE-linear, MMSE-SIC). The pilot allocation is dynamically controlled by feedback of the pilot allocation index so to optimize SER performance. Furthermore, mathematical expressions of the instantaneous signal to interference and noise ratio (SINR) in the presence of channel estimation error for different receivers are derived to obtain the error probabilities of data subcarriers through an approximate error probability function for MPSK modulation. The pilot locations are based on these error probabilities to avoid data symbols transmitted over these subcarriers with high error probabilities instead of pilots over them. Simulation results are provided to illustrate the performance gains achieved with these receivers by this dynamic pilot allocation.

UR - http://www.scopus.com/inward/record.url?scp=80051994242&partnerID=8YFLogxK

U2 - 10.1109/VETECS.2011.5956755

DO - 10.1109/VETECS.2011.5956755

M3 - Conference contribution

AN - SCOPUS:80051994242

SN - 9781424483310

T3 - IEEE Vehicular Technology Conference

BT - 2011 IEEE 73rd Vehicular Technology Conference, VTC2011-Spring - Proceedings

T2 - 2011 IEEE 73rd Vehicular Technology Conference, VTC2011-Spring

Y2 - 15 May 2011 through 18 May 2011

ER -

Dynamic pilot allocation channel estimation with spatial multiplexing for MIMO-OFDM systems

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