Presentation 2015-03-06
A study on coherent MFSK detection on MIMO frequency selective channels
Kazuhiro OKAMOTO, Yasunori IWANAMI,
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Abstract(in English) MFSK (M-ary Frequency Shift Keying) signal has a constant envelope and is suited to power efficient nonlinear amplification. However, the application of MFSK signals to spectrally efficient and reliable MIMO communication schemes has not been so popular up to now. Maybe this comes from the fact that the signal processing for spatially multiplexed MIMO signal is usually done using linear matrix algebra and the application of linear signal processing techniques to nonlinear FM signals is difficult. In this paper, we study the coherent detection of MFSK signals on frequency selective MIMO channels based on MLD (Maximum Likelihood Detection) approach. In the proposed receiver, the receive replica signal which is frequency and phase synchronized is generated and the signal distance between the receive signal and the replica signal is minimized. By extending the observation length of receive signal, we improved the BER characteristics. We also reduced the complexity of MLD by using the SE (Schnorr Euchner) algorithm of Sphere Decoding to obtain ML solution.
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Keyword(in English) MIMO / MFSK / Frequency selective channel / ISI canceller / MLD / Sphere Decoding / SE algorithm
Paper # RCS2014-362
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Committee RCS
Conference Date 2015/2/25(1days)
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Registration To Radio Communication Systems (RCS)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A study on coherent MFSK detection on MIMO frequency selective channels
Sub Title (in English)
Keyword(1) MIMO
Keyword(2) MFSK
Keyword(3) Frequency selective channel
Keyword(4) ISI canceller
Keyword(5) MLD
Keyword(6) Sphere Decoding
Keyword(7) SE algorithm
1st Author's Name Kazuhiro OKAMOTO
1st Author's Affiliation Department of Computer Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology()
2nd Author's Name Yasunori IWANAMI
2nd Author's Affiliation Department of Computer Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology
Date 2015-03-06
Paper # RCS2014-362
Volume (vol) vol.114
Number (no) 490
Page pp.pp.-
#Pages 6
Date of Issue