AN EFFICIENT ESTIMATION OF CARRIER FREQUENCY ERROR IN MULTICARRIER SPREAD SPECTRUM SYSTEM FOR POWER LINE COMMUNICATIONS
Published In: 2ND INTERNATIONAL CONFERENCE ON ADVANCES IN COMPUTING, ELECTRONICS AND COMMUNICATION
Author(s): GAOYONG LUO
Abstract: Multicarrier spread spectrum (MC-SS) systems exhibit good robustness against all kinds of narrowband interference, coloured noise or selective attenuation for power line communications. However, the systems’ vulnerability to frequency synchronization errors, which introduce loss of orthogonality between the subcarriers, is still a challenging problem for robust communications. This paper presents a novel multicarrier spread spectrum system with carrier frequency error estimation and low complexity by frequency division multiple access (FDMA) approach to cope with highly unpredictable harsh power line channel. Experimental results demonstrate that the frequency error estimation and compensation based on a successive phase difference measurement can achieve performance near to that without frequency errors, leading to robust communications for smart grid applications.
- Publication Date: 26-Oct-2014
- DOI: 10.15224/978-1-63248-029-3-71
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- Downloads: 0
P : A NEW PATH PLANNING ALGORITHM FOR AUTONOMOUS ROBOT IN AN UNKNOWN ENVIRONMENT
Published In: 2ND INTERNATIONAL CONFERENCE ON ADVANCES IN COMPUTING, ELECTRONICS AND COMMUNICATION
Author(s): FAROUK MEDDAH , LYNDA DIB
Abstract: In this paper we present P* “P-Star” witch is a new algorithm for sensor based path planning. This work is based on PointBug algorithm [11] where we applied some improvements and modifications to overcome some important problems (like infinite loops and the bypass of some sub-paths). Moreover, we present some simulation results and comparisons with PointBug to evaluate and to verify the performance and the power of the proposed algorithm.
- Publication Date: 26-Oct-2014
- DOI: 10.15224/978-1-63248-029-3-72
- Views: 0
- Downloads: 0