An equalization technique based on QR decomposition for DSTBC-OFDM systems with distributed carrier frequency offsets

Jaehwan Kim, Hyungjoon Song, Sungsoo Park, Cheolwoo You, Young Hoon Kwun, Daesik Hong

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In the distributed space-time block coded (DSTBC) orthogonal frequency division multiplexing (OFDM) system (DSTBC-OFDM), there may exist distributed carrier frequency offsets (CFOs) by sharing the transmission antennas belonging to different nodes. In this paper, the signal model of the DSTBC-OFDM system with distributed CFOs is presented. Then we propose a new equalization technique via the modification of the QR decomposition (MQRD) in order to eliminate ICI and ISI which are caused by CFOs. The proposed MQRD scheme guarantees transmit diversity gain. Several kinds of equalization techniques are introduced and compared in terms of bit error rate (BER) performance and transmit diversity order. Simulation results show that the proposed method outperforms conventional equalization techniques and achieves equal transmit diversity order with perfectly synchronized DSTBC-OFDM system.

Original languageEnglish
Title of host publication18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'07
DOIs
Publication statusPublished - 2007 Dec 1
Event18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'07 - Athens, Greece
Duration: 2007 Sep 32007 Sep 7

Other

Other18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'07
CountryGreece
CityAthens
Period07/9/307/9/7

Fingerprint

Orthogonal frequency division multiplexing
Decomposition
Bit error rate
Antennas

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

Cite this

Kim, J., Song, H., Park, S., You, C., Kwun, Y. H., & Hong, D. (2007). An equalization technique based on QR decomposition for DSTBC-OFDM systems with distributed carrier frequency offsets. In 18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'07 [4394612] https://doi.org/10.1109/PIMRC.2007.4394612
Kim, Jaehwan ; Song, Hyungjoon ; Park, Sungsoo ; You, Cheolwoo ; Kwun, Young Hoon ; Hong, Daesik. / An equalization technique based on QR decomposition for DSTBC-OFDM systems with distributed carrier frequency offsets. 18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'07. 2007.
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abstract = "In the distributed space-time block coded (DSTBC) orthogonal frequency division multiplexing (OFDM) system (DSTBC-OFDM), there may exist distributed carrier frequency offsets (CFOs) by sharing the transmission antennas belonging to different nodes. In this paper, the signal model of the DSTBC-OFDM system with distributed CFOs is presented. Then we propose a new equalization technique via the modification of the QR decomposition (MQRD) in order to eliminate ICI and ISI which are caused by CFOs. The proposed MQRD scheme guarantees transmit diversity gain. Several kinds of equalization techniques are introduced and compared in terms of bit error rate (BER) performance and transmit diversity order. Simulation results show that the proposed method outperforms conventional equalization techniques and achieves equal transmit diversity order with perfectly synchronized DSTBC-OFDM system.",
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Kim, J, Song, H, Park, S, You, C, Kwun, YH & Hong, D 2007, An equalization technique based on QR decomposition for DSTBC-OFDM systems with distributed carrier frequency offsets. in 18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'07., 4394612, 18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'07, Athens, Greece, 07/9/3. https://doi.org/10.1109/PIMRC.2007.4394612

An equalization technique based on QR decomposition for DSTBC-OFDM systems with distributed carrier frequency offsets. / Kim, Jaehwan; Song, Hyungjoon; Park, Sungsoo; You, Cheolwoo; Kwun, Young Hoon; Hong, Daesik.

18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'07. 2007. 4394612.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Kim J, Song H, Park S, You C, Kwun YH, Hong D. An equalization technique based on QR decomposition for DSTBC-OFDM systems with distributed carrier frequency offsets. In 18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'07. 2007. 4394612 https://doi.org/10.1109/PIMRC.2007.4394612