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Bandwidth-efficient frequency-domain equalization for single carrier multiple-input multiple-output underwater acoustic communications
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10.1121/1.3480569
/content/asa/journal/jasa/128/5/10.1121/1.3480569
http://aip.metastore.ingenta.com/content/asa/journal/jasa/128/5/10.1121/1.3480569

Figures

Image of FIG. 1.
FIG. 1.

The diagram for the proposed MIMO UWA SC-FDE system with SM architecture.

Image of FIG. 2.
FIG. 2.

Data structure for overlapped-window FDE.

Image of FIG. 3.
FIG. 3.

Frame structure of the transmitted data.

Image of FIG. 4.
FIG. 4.

Amplitude of time-varying CIRs for the 1000 m system. (a) The 2D CIR for the subchannel Tx1—Rx1. (b) The CIRs in one block duration for the subchannel Tx1—Rx1. (c) The 2D CIR for the subchannel Tx2—Rx1. (d) The CIRs in one block duration for the subchannel Tx2—Rx1.

Image of FIG. 5.
FIG. 5.

Amplitude of time-varying CIRs for the 400 m system. (a) The 2D CIR for the subchannel Tx1—Rx1. (b) The CIRs in one block duration for the subchannel Tx1—Rx1. (c) The 2D CIR for the subchannel Tx2—Rx1. (d) The CIRs in one block duration for the subchannel Tx2—Rx1.

Image of FIG. 6.
FIG. 6.

(a) Scatter plot of equalized symbols; (b) Scatter plot of equalized and phase-corrected symbols.

Image of FIG. 7.
FIG. 7.

Scatter plots for the overlapped-window FDE scheme with difference subblock sizes. The smaller the subblock size, the better the performance demonstrating better channel tracking and equalization.

Image of FIG. 8.
FIG. 8.

Average uncoded BER vs subblock size .

Tables

Generic image for table
TABLE I.

Uncoded BER of QPSK-2048 blocks for 400 m system.

Generic image for table
TABLE II.

Uncoded BERs of QPSK-2048 blocks for 1000 m system.

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/content/asa/journal/jasa/128/5/10.1121/1.3480569
2010-11-24
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Bandwidth-efficient frequency-domain equalization for single carrier multiple-input multiple-output underwater acoustic communications
http://aip.metastore.ingenta.com/content/asa/journal/jasa/128/5/10.1121/1.3480569
10.1121/1.3480569
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