Abstract
Acoustic communications are able to transmit multimedia data and sound simultaneously. But, there is a problem about low data throughput because of narrow frequency band of audible sound in acoustic communication system In this paper, we propose an acoustic multimedia data transmission system with multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) for high data rate in acoustic communication system. We compare the receive performance of the proposed system with the existing system with single-input single-output (SISO) by experiment. The data rates of SISO and MIMO system are 4.9 kb/s and 9.1kb/s respectively, with QPSK modulation, no channel coding, and about 3.5 KHz data frequency bandwidth. We ensure that the data throughput of the proposed system is increasing approximately 80% than SISO system. But the proposed systems need more Pilot SNR about 2dB than SISO system to satisfy the BER performance of 10e-3. In other words, we can dramatically increase data throughput of acoustic communication system with MIMO but receive performance is a little decrease.
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Bok, J., Ryu, HG. (2011). Wireless Multimedia Acoustic Transmission with MIMO-OFDM. In: Lee, G., Howard, D., Ślęzak, D. (eds) Convergence and Hybrid Information Technology. ICHIT 2011. Lecture Notes in Computer Science, vol 6935. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-24082-9_15
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DOI: https://doi.org/10.1007/978-3-642-24082-9_15
Publisher Name: Springer, Berlin, Heidelberg
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