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Due to the hardware cost and site constraints, the underwater transmission cannot be easily achieved in the terrestrial environment. In addition, network simulators also cannot precisely evaluate the network performance. As a result, a ZigBee-based Emulation Platform (ZEP) for underwater acoustic sensor networks is developed to estimate the network performance. Based on the evaluation results, some...
This letter addresses the problem of localization in a quasi-synchronous network using time-of-arrival (TOA) measurements. The object to be localized is passive, i.e., it is neither a transmitter nor a receiver. Unlike prior TOA-based algorithms, no perfect synchronization between the transceivers is assumed here. A two-step linear algorithm is proposed to jointly estimate the location of the passive...
To facilitate the efficient allocation of limited transmit power, a bit error rate (BER) constraint based power allocation scheme is proposed in this paper for the downlink of multi-carrier code division multiple access (MC-CDMA) systems with linear minimum mean square error (MMSE) receiver. According to the instantaneous channel conditions, the proposed scheme can adaptively allocate the required...
RapidIO is an open standard that provides high-performance interconnect for chip-to-chip, board-to-board, and chassis-to-chassis communications. In this paper, we present an executable RapidIO interconnect in which an improved Buffer structure based on flow control is put forward. It helps to provide a smooth data flow, strong built-in error detection and error recovery mechanisms. It is tested to...
We describe a telecentric optical system for free-space multichannel optical interconnects. The targeted aggregate data rate is 240 Gb/s. We have a unique implementation of telecentric optics and achieved an optical link that is simple, robust and modular. The integrity of the optical link is not significantly degraded with a >plusmn2 mm translational misalignment between the transmitter and receiver...
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