Name
Title | ||
|---|---|---|
Time-Domain Block and Per-Tone Equalization for MIMO---OFDM in Shallow Underwater Acoustic Communication |
Abstract | ||
|---|---|---|
Shallow underwater acoustic (UWA) channel exhibits rapid temporal variations, extensive multipath spreads, and severe frequency-dependent attenuations. So, high data rate communication with high spectral efficiency in this challenging medium requires efficient system design. Multiple-input multiple-output orthogonal frequency-division multiplexing (MIMO---OFDM) is a promising solution for reliable transmission over highly dispersive channels. In this paper, we study the equalization of shallow UWA channels when a MIMO---OFDM transmission scheme is used. We address simultaneously the long multipath spread and rapid temporal variations of the channel. These features lead to interblock interference (IBI) along with intercarrier interference (ICI), thereby degrading the system performance. We describe the underwater channel using a general basis expansion model (BEM), and propose time-domain block equalization techniques to jointly eliminate the IBI and ICI. The block equalizers are derived based on minimum mean-square error and zero-forcing criteria. We also develop a novel approach to design two time-domain per-tone equalizers, which minimize bit error rate or mean-square error in each subcarrier. We simulate a typical shallow UWA channel to demonstrate the desirable performance of the proposed equalization techniques in Rayleigh and Rician fading channels. |
Year | DOI | Venue |
|---|---|---|
2013 | 10.1007/s11277-012-0869-y | Wireless Personal Communications |
Keywords | Field | DocType |
dispersive channel,bit error rate,per-tone equalization,mean-square error,typical shallow uwa channel,rapid temporal variation,shallow underwater acoustic communication,minimum mean-square error,shallow uwa channel,time-domain block,rician fading channel,proposed equalization technique,underwater channel | Multipath propagation,MIMO-OFDM,Telecommunications,Equalization (audio),Underwater acoustic communication,Computer science,Communication channel,Real-time computing,Electronic engineering,Orthogonal frequency-division multiplexing,Bit error rate,Rician fading | Journal |
Volume | Issue | ISSN |
71 | 2 | 1572-834X |
Citations | PageRank | References |
1 | 0.37 | 10 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Mojtaba Beheshti | 1 | 5 | 1.47 |
| Mohammad Javad Omidi | 2 | 41 | 12.92 |
| Ali Mohammad Doost-Hoseini | 3 | 15 | 2.99 |