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Dynamic coded cooperation (DCC) allows relay diversity without altering the transmission procedure from the source to the destination. In this paper, we propose a practical orthogonal frequency-division multiplexing (OFDM)-modulated DCC scheme for underwater relay networks, where OFDM modulation accommodates multipath fading channels with large delay spread. Two cooperation strategies are studied,...
In this paper, we present a factor-graph based receiver for zero-padded orthogonal frequency division multiplexing (ZP-OFDM) transmissions over deep water channels with extremely long delay spreads. Due to the geometric structure of deep oceans, the channel delay spread between the direct paths and surface/bottom reflections can be on the order of hundreds of milliseconds, which is usually several...
This paper is devoted to stability analysis and anti-windup design for linear time-delay systems subject to actuator saturation. A new Lyapunov-Krasovskii approach is presented, and a direct design algorithm is derived to compute the anti-windup compensator gain, which reduces the conservatism greatly. Both delay-independent asymptotic stability (DIAS) and delay-dependent asymptotic stability (DDAS)...
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