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An important application field of swarm intelligence algorithms is fuzzy rule acquisition. However, their limitations are showed in two aspects. On one hand, it takes a long process to create fuzzy rules during the iterations; on the other, the swarm intelligence algorithms obtain local optimal solution at times. To overcome these disadvantages, a dynamic hybrid swarm intelligence approach is proposed...
This paper presents optimized synchronization algorithms and architecture designs of a downlink baseband receiver for multiband orthogonal frequency division multiplexing ultra wideband (MB-OFDM UWB). The receiver system targets at low complexity and low power under the premise of good performance. At algorithm level, dual-threshold (DT) detection method is proposed for robust detection performance...
In the research of sentiment analysis, some supervised learning algorithms play an important role. Among them, Naïve Bayes is often used in engineering application due to its low computational and space complexity. While traditional Naïve Bayes algorithm has been shown to perform very well in domain-specific sentiment classification, it often performs badly in domain-transfer problem. So we propose...
Robust, efficient and low complexity design methodologies for high speed multi-band orthogonal frequency division multiplexing ultra-wideband (MB-OFDM UWB) is presented. The proposed design is implemented in 0.13μm CMOS technology with the core area of 2.66mm × 0.94mm. Operating at 132MHz clock frequency, the estimated power consumption is 170mW.
In the design of frequency synchronizer (FS), arctangent function and sine/cosine generator are the critical parts for Carrier Frequency Offset (CFO) estimation and compensation respectively. They are traditionally implemented with Coordinate Rotation Digital Computer (CORDIC), which has the drawbacks of low accuracy and long convergence time. In this paper, the Multipartite Table Method (MTM) is...
Multiband orthogonal frequency division multiplexing (MB-OFDM) ultra wideband (UWB) systems have drawn much attention for its high spectrum efficiency and multiple access capability. However, its large throughput requirement and low power spectral density result in high hardware complexity and high power consumption, which are challenges of designing the packet detector. In this paper, a novel detection...
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