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Navigation of mobile wireless sensor networks and fast target acquisition without a map are two challenging problems in search and rescue applications. In this paper, we propose and evaluate a novel Gradient Driven method, called GraDrive. Our approach integrates per-node prediction with global collaborative prediction to estimate the position of a stationary target and to direct mobile nodes towards...
In this paper we propose a high performance bidirectional path preserving trellis search (PPTS) detector for multiple-input-multiple-output (MIMO) systems. The error analysis between single direction and bidirectional PPTS detector is given. We prove that the bidirectional PPTS detector can minimize the detection error effectively. Moreover, the proposed detector saves 10% hardware cost with a 0.1dB...
On behalf of the technical program committee, we are pleased and honored to invite and welcome you to Malaysia and to the 2010 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS 2010). In APCCAS 2010, the technical program shows the novel and advanced development in the field of circuits and systems. We also hope all attendees have fun in enjoying the history and cultures of Malaysia.
The wide proliferation of wireless services and applications with increasing bandwidth needs is rapidly creating a spectrum shortage. However, the problem is caused primarily by inefficient legacy spectrum allocation policies, so that even when some applications suffer from lack of bandwidth, there is idle capacity in other bands. To deal with this challenge, the FCC, ITU and other regulatory organizations...
We present a digital hardware model for ultra wideband channels. The system runs at 80 MHz on a Xilinx Virtex-4 xc4vsx35 FPGA. High-speed arithmetic operations including division, square root, powering and normal random number generator are analyzed and developed for use as basic components in the channel emulator. The design flow is based on Matlab Simulink as the model builder, followed by Xilinx...
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