A simplified propagation channel model for evaluating MRC diversity characteristics in SIMO OFDM with insufficient guard interval

Phuc, L. Tan; Zheng, Yao; Karasawa, Yoshio

doi:10.1109/usnc-ursi-nrsm.2016.7436257

Cited by 3 publications

(1 citation statement)

References 2 publications

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“…The same phenomenon would be observed even in QPSK transmission. Improvement of SNR using antenna arrays is practical rather than keeping a high CNR, where Zheng presented MRC diversity in SIMO-OFDM as a measure against insufficient guard interval in [15]. data block and th GI of the delay wave overlap with th data block of the direct wave.…”

Section: Delay Wavementioning

confidence: 99%

Data Selective Rake Reception for Underwater Acoustic Communication in Strong Multipath Interference

Yoshizawa¹,

Tanimoto²,

Saito³

2017

Journal of Electrical and Computer Engineering

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In underwater acoustic communication (UAC), very long delay waves are caused by reflection from water surfaces and bottoms and obstacles. Their waves interfere with desired waves and induce strong multipath interference. Use of a guard interval (GI) is effective for channel compensation in OFDM. However, a GI tends to be long in shallow-water environment because a guard time is determined by a delay time of multipath. A long GI produces a very long OFDM frame in several seconds, which is disadvantageous to a response speed of communication. This paper presents a method of keeping good communication performance even for a short GI. We discuss influence of intercarrier interference (ICI) in OFDM demodulation and propose a method of data selective rake reception (DSRake). The effectiveness of the proposed method is discussed by received signal distribution and confirmed by simulation results.

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Section: Delay Wavementioning

confidence: 99%