Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Linear Predictive Detection for Power Line Communications Impaired by Colored Noise | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2007 Article ID 32818 12 pages doi 2007 32818 Research Article Linear Predictive Detection for Power Line Communications Impaired by Colored Noise Riccardo Pighi and Riccardo Raheli Dipartimento di Ingegneria dell Informazione Universita di Parma Viale G. P Usberti 181A 43100 Parma Italy Received 10 November 2006 Revised 21 March 2007 Accepted 13 May 2007 Recommended by Lutz Lampe Robust detection algorithms capable of mitigating the effects of colored noise are of primary interest in communication systems operating on power line channels. In this paper we present a sequence detection scheme based on linear prediction to be applied in single-carrier power line communications impaired by colored noise. The presence of colored noise and the need for statistical sufficiency requires the design of an optimal front-end stage whereas the need for a low-complexity solution suggests a more practical suboptimal front-end. The performance of receivers employing both optimal and suboptimal front-ends has been assessed by means of minimum mean square prediction error MMSPE analysis and bit-error rate BER simulations. We show that the proposed optimal solution improves the BER performance with respect to conventional systems and makes the receiver more robust against colored noise. As case studies we investigate the performance of the proposed receivers in a low-voltage LV power line channel limited by colored background noise and in a high-voltage HV power line channel limited by corona noise. Copyright 2007 R. Pighi and R. Raheli. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 1. INTRODUCTION In the last years there has been a growing interest towards the possibility of exploiting existing power lines as effective .
