Wireless Communications
Cooperative multihop communication for underwater acoustic networks
WUWNet '06 Proceedings of the 1st ACM international workshop on Underwater networks
On the relationship between capacity and distance in an underwater acoustic communication channel
ACM SIGMOBILE Mobile Computing and Communications Review
On efficient channel estimation for underwater acoustic OFDM systems
Proceedings of the Fourth ACM International Workshop on UnderWater Networks
On the capacity of Rayleigh fading cooperative systems under adaptive transmission
IEEE Transactions on Wireless Communications
Underwater acoustic communication channels: propagation models and statistical characterization
IEEE Communications Magazine
Exact symbol error probability of a Cooperative network in a Rayleigh-fading environment
IEEE Transactions on Wireless Communications
Improving amplify-and-forward relay networks: optimal power allocation versus selection
IEEE Transactions on Wireless Communications
Capacity of fading channels with channel side information
IEEE Transactions on Information Theory
Cooperative diversity in wireless networks: Efficient protocols and outage behavior
IEEE Transactions on Information Theory
Capacity bounds and power allocation for wireless relay channels
IEEE Transactions on Information Theory
Overview of channel models for underwater wireless communication networks
Physical Communication
Efficient Multicarrier Communication for Highly Spread Underwater Acoustic Channels
IEEE Journal on Selected Areas in Communications
IEEE Journal on Selected Areas in Communications
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In this paper, we investigate the problem of maximizing the data transmission rate of a cooperative relay system in an underwater acoustic communication channel. With amplify-and-forward relaying and adaptive source transmission, we present optimal transmit signal power adaptation policies that maximize the data transmission rate, considering both frequency and time domains. The analysis takes into account a physical model of acoustic path loss and ambient noise power spectral density. Typical characteristics of underwater channel such as frequency-dependent fading and time variations are also considered. Capacity bounds for channel state information (CSI) only at the receiver and CSI at both transmitter and receiver are presented. To maximize the data rate, we use the notion of an optimal bandwidth which corresponds to efficient allocation of signal power across the transmission bandwidth. Under the constraint of an average transmit power, the optimal transmit power adaptation policy is found to be ‘water-pouring’ in frequency-time domain, while the transmit power adaptation policy with a total power constraint is ‘water-pouring’ in frequency domain. Results show that both frequency domain and frequency-time domain power adaptation schemes provide much greater improvement in average data rate over that of the constant power case. Copyright © 2011 John Wiley & Sons, Ltd.