Synchronisation of ISS-OFDM signals
Interleaved Spread Spectrum OFDM (ISS-OFDM) is a new spread-spectrum modulation method which is simular to conventional OFDM. Despite properties of the signal itself are quite well studied, the problem of synchronisation remains unsolved. A novel sampling clock offset tracking algorithm is proposed and analysed in this article together with classical correlation-based acquisition algorithm. Simulation of ISS-OFDM communication system shows that it can operate at negative signal-to-noise ratios with acceptable bit error rate.