Direct Mapping OFDM-Based Transmission Scheme for Underwater Acoustic Multimedia

In this paper, we propose a direct mapping (DM) orthogonal frequency division multiplexing (OFDM) based transmission scheme for underwater acoustic multimedia (UAM). We adopt DM multi-input multi-output (MIMO), power assignment mechanism, OFDM, adaptive modulation, and unequal error protection in the UAM system. The proposed underwater acoustic multimedia system employs high power, low speed modulation, and schemes providing significant error protection for the transmission of sensor data messages requiring a stringent bit-error rate (BER). In contrast, low power, high speed modulation, and less capable error protection schemes are provided for messages that can tolerate a high BER. Simulation results show that the proposed scheme can not only fulfill the quality of services (QoS) required by a UAM system, but also achieve the mission of maximum transmission bit rates or minimum transmission power.

[1]  S. Shahabudeen,et al.  Recent advances in underwater acoustic communications & networking , 2008, OCEANS 2008.

[2]  Arif Ghafoor,et al.  Dynamic Resource Allocation for Multimedia Services in Mobile Communication Environments , 1995, IEEE J. Sel. Areas Commun..

[3]  John Terry,et al.  OFDM Wireless LANs: A Theoretical and Practical Guide , 2001 .

[4]  Jiejun Kong,et al.  The challenges of building mobile underwater wireless networks for aquatic applications , 2006, IEEE Network.

[5]  Chin-Feng Lin,et al.  DIRECT MAPPING OVSF-BASED TRANSMISSION SCHEME FOR UNDERWATER ACOUSTIC MULTIMEDIA COMMUNICATION , 2010 .

[6]  Chin-Feng Lin,et al.  A power assignment mechanism for underwater wireless multimedia , 2008, OCEANS 2008.

[7]  Milica Stojanovic,et al.  Shallow water acoustic networks , 2001, IEEE Commun. Mag..

[8]  M. Stojanovic,et al.  Underwater acoustic networks , 2000, IEEE Journal of Oceanic Engineering.

[9]  Hsien-Sen Hung,et al.  An OFDM-based transmission scheme for underwater acoustic multimedia , 2009 .

[10]  Philip Schniter,et al.  Efficient Multicarrier Communication for Highly Spread Underwater Acoustic Channels , 2008, IEEE Journal on Selected Areas in Communications.

[11]  Jian Zhang,et al.  Frequency-domain equalization for single carrier MIMO underwater acoustic communications , 2008, OCEANS 2008.

[12]  A.B. Baggeroer,et al.  The state of the art in underwater acoustic telemetry , 2000, IEEE Journal of Oceanic Engineering.

[13]  A. Baggeroer,et al.  Acoustic telemetry - An overview , 1984, IEEE Journal of Oceanic Engineering.

[14]  Milica Stojanovic,et al.  Recent advances in high-speed underwater acoustic communications , 1996 .