Exemplary embodiments of the present invention relate to a power line communication system. The present invention also relates to a method for synthesising said biopolymer. The invention further relates to corn seeds and plants produced by crossing plants of variety CV601120 with plants of another variety, such as another inbred line. The device further includes a rechargeable battery, a recharging base station, and a temperature maintaining mechanism. The transmit power for the pilot may be scaled higher to attain the same total pilot energy even though S instead of M subbands are used for pilot transmission by each terminal.