Multi-interval line coding technique for high speed transmissions

Abstract

A multi-interval line coding (MILC) technique which operates over blocks of intervals is proposed to increase the transmission rate without expanding the bandwidth or using higher order signalling. This is done by dividing every interval into sub-intervals, and allowing the signals to make amplitude transitions at the end of sub-intervals. However, the waveforms are generated by maintaining the duration of all individual pulses at least at equal to the original bit interval thereby maintaining spectral variations close to that of ordinary binary signals. Numerical results presented for data transmission over a printed circuit board (PCB) trace indicate that MILC schemes perform significantly better than ordinary binary signalling at the same information transfer rate under severe ISI conditions.