Aspects of the present disclosure aim at providing a channel encoder configured to implement a temporally spreading coding scheme, wherein each bit of duration ‘T’ from a block of k bits is spread in time domain to ‘k times T’ i.e., k*T duration by means of one or more orthogonal codes. In an aspect, orthogonal codes of the present disclosure can be constituted from a sequence of discrete or digital values such that spreading (using convolution operation) and dispreading or concentrating or reconstruction (using de-convolution operation) of transmitted bit is unique and deterministic. Discrete values could be from Gaussian waveform or truncated Gaussian waveform. Digital values could be 1 (one) and 0 (zero).