wire line and wire less data transmission systems and to enable exploitation of implicit diversity of multi path fading channels both with and without transmitter end pre coding adaptation properties of per bin dfe equalization are analyzed by computer simulation for an intermediate number of constituent sub channels ber performance comparison between the conventional orthogonal frequency division multiplication and based multi carrier systems of similar modulation demodulation complexity and transmission latency is provided and the potential advantage of using spectrally well shaped orthogonal sub channels in wireless applications is demonstrated application_number US 7684302 A description starting from the defining relation in salzberg mentioned above the oqam mc transmit signal can be expressed in concise form by equation 1 with in equation 1 the parameter t is the qam symbol interval duration and f k is the k th sub channel central frequency nominally defined by k t variables a k m shown above for two consecutive even and odd values of m represent the real and imaginary parts of complex qam data symbols in the k th sub channel g t represents the real impulse response of the square root raised cosine low pass transfer function g u03c9 with the roll off factor 0 u2266 u03b1 u2266 1 the transfer function g u03c9 has 3 db attenuation at frequencies u00b1 u00bdt and ideally is zero outside the interval u2212 1 u03b1 2t 1 u03b1 2t combined with a demodulation part and the transmission channel with transfer function h u03c9 a generic block diagram of an oqam mc transmission system is shown in fig1 this diagram has been used to derive the linear per bin equalization structure and its dfe extension being the main part of this invention the left hand.