Design and Performance Analysis of an Adaptive-MDCSK System over Katayama Power Line Communication Channel

Previous works with M-ary differential chaos shift keying (MDCSK) schemes are designed for resisting the impulsive noise of power line communication (PLC). However, real PLC channel environments are complex, existing schemes primarily address impulsive noise but do not effectively reflect the advantages of the system in a real PLC environment. This paper first discusses the bit-error-rate (BER) performance of the MDCSK system in Katayama PLC environments, and designs a derivation scheme of time slots-dependent BER. Then, based on the characteristics of periodic changes in the Katayama PLC channel environment, an adaptive-MDCSK (AD-MDCSK) is proposed to obtain better BER performance in such environments, which eliminates the need for a device to pre-check the BER. In the proposed scheme, the two types of MDCSK schemes are switched with the time slots period changing, where two categories of detectors are also changed correspondingly at the receiver. The BER of the AD-MDCSK is derived and analyzed regarding its effectiveness over Katayama PLC channel. The simulation results verify the accuracy of the design and show the superior performance of the proposed scheme. The BER performances of the proposed system are compared to other existing schemes, demonstrating its better BER performance. © 1972-2012 IEEE.