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Optimal waveform design is an important technology for cognitive radar. Much effort has been focused on designing algorithms without target impulse response prediction and constant modulus constraint. In this paper, a new waveform design method is proposed, the next transmitted waveform could match the next target signature well. Since the radar systems commonly require constant modulus waveforms...
Waveform optimization for radar/sonar systems has been recently developed, especially after cognitive radar is proposed. The waveform optimization is different as a result of different tasks of radar systems. Usually, an optimized waveform just only aims at one task in most research. In this paper, an novel algorithm is proposed to generate the transmitted signal for multi-task of radar systems. The...
This paper focuses on the optimal waveform design for target detection in scenario of range-spread target. The previously published papers, which focused on optimal waveform design, assumed the target impulse response is perfect or known. However, the target impulse response used for next transmitted waveform is the previous target impulse response. The transmitted waveform designed should aim to...
This paper studies power distribution in the downlink of a wireless CDMA network, where mobile stations (MSs) cooperatively relay traffic for their peer stations, and the destination station (DS) combines signals received from both the base station (BS) and the relay station (RS). Both the DS and the RSs transmit at the same frequency band. We consider both decode-and-forward (DF) and amplify-and-...
In a cognitive wireless network with spectrum underlay, secondary links can transmit at the same spectrum as primary links as long as the interference to the primary links is below a pre-negotiated interference threshold. This paper studies the effect of setting different interference thresholds on the transmission rate of the secondary links and how secondary transmissions affect the primary links...
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