N-Dimensional polar FSK

While working with the wireless communication systems(especially Personal Data Network) using existing modulation techniques, various problems encountered are: multipath fading, time dispersion which leads to ISI, lower bit rate capacity, requirement of larger transmit power for high bit rate and less spectral efficiency. To overcome above problems, this paper proposes a new digital modulation technique: N-Dimensional polar FSK. The proposed technique is based on multi-carrier system which helps in reducing frequency selective fading. To reduce multipath interference, symbol duration should be increased by increasing number of bits/symbol. This new technique works excellent by resulting in a constant bandwidth and Euclidean distance as the number of bits/symbol increases, thus providing high spectral and power efficiency.