The experimental blind timing acquisition scheme for FM-DCSK communication system

Abstract

System design and performance are presented for an experimental FM-DCSK radio system with a blind timing acquisition scheme. The transmitter and receiver architecture is proposed, and a novel two-stage blind bit synchronization algorithm for a fast and efficient timing acquisition process is introduced. This synchronization scheme exploits the waveform repetition pattern which naturally present in the DCSK transmitted reference signal structure. The BER performance of such systems is evaluated under AWGN and multi-path channel, the value is fairly close to that of perfect synchronization, which is 0.2dB difference at SNR 10–15dB. Key building blocks of circuit implementation are also presented.