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In order to improve the calculation accuracy of polarized-light navigation sensor, the system error model was derived. Through the system error model, the system error source parameters could be calibrated outline, and the system error could be compensated greatly. The random error model was also derived in this paper. The transitive relation between random error and calculation accuracy of polarization...
Wireless mesh networks (WMN) are receiving increasing development, which configuration multi-radio multi-channel nodes to improve channel resources utilization in the network topology architecture and achieve increasing efficient on the network throughput. The main goal of channel assignment algorithms in multi-radio multi-channel wireless mesh networks is to minimize the overall interference and...
For barrier coverage issue of wireless sensor network, we propose a deployment scheme of sensor nodes for intrusion objects whose trajectory could be predicted. We provide the theoretical foundations for our scheme, and then analyze availability and reasonableness of our proposal from the perspective of the algorithm. This program only needs to activate nodes which are on the maximum probability path...
This paper presented novel Carrier Frequency Offset (CFO) acquisition together with multi-antenna channel estimation algorithms for burst-mode Multiple-Input Multiple-Output combined with Orthogonal Frequency Division Multiplexing (MIMO-OFDM) systems. The new algorithms take full advantage of some known channel information (for example, the length of channel impulse response L which can be estimated...
In this paper, we derived joint frequency synchronization and channel estimation algorithms MIMO-OFDM systems (Multiple-Input Multiple-Output & Orthogonal Frequency Division Multiplexing). Although the new estimator is also based on Expectation Maximization (EM) algorithm, but unlike traditional estimator the new one utilized some known channel parameters to achieve estimator Matrix Dimensionality...
This paper examined the problem of carrier phase recovery in turbo-coded OFDM systems. Then introduced a novel a priori probability aided (APPA) OFDM joint carrier phase recovery and signal detection algorithms to eliminate disadvantage impact brought by phase offset. The algorithms utilized the soft value of the extrinsic information generated by iterative maximum a posteriori (MAP) turbo decoders...
A new training symbol with special structure is proposed aimed at the synchronization problem of orthogonal frequency division multiplexing (OFDM). Being different from many classical algorithm, the training symbol has special phase rotation relationship in the frequency domain. Based on this structure, a new joint symbol timing and frequency synchronization algorithm is presented. In the New algorithm,...
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