Abstract
Power line carrier communication utilizes power lines as a communication channel for data transmission by superimposing carrier signals at lower energy levels onto 50/60 Hertz power signals. Power line carrier communication devices are susceptible to dynamic noise as the channel conditions vary depending on the connected loads. STD IEEE1901.2 specifies an adaptive modulation scheme to overcome the dynamic behavior of channel conditions. For the implementation of an adaptive modem meeting IEEE1901.2 requirements, knowledge of different mapping schemes is necessary. In this paper, coherent and non-coherent mapping schemes as listed in IEEE1901.2 are realized in the Simulink® environment. The performance of different mapping techniques with respect to Bit Error Rate versus signal to noise ratio is evaluated and compared with theoretical values. This information can be used for developing adaptive modem design.
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