One-dimensional detector for burst communication signal and analysis on its bandwidth parameter

In the detection of burst communication signals, the frequency-domain detector searches in both carrier location and bandwidth, and it demands large computational effort. An one-dimensional detector is proposed for reducing computational effort. The new detector searches signals with a specific bandwidth value. The optimum bandwidth is analyzed from theoritical calculation and Monte Carlo simulation. For single-rate signal detection, its best performance equivalent to two-dimensional detector is achieved when the detector bandwidth equals to the signal bandwidth. Correspondingly, there is about 2 dB performance loss when the detector bandwidth is one time greater or smaller than signal bandwidth. For the mixed-rate signal detection, the optimum bandwidth in the sense of maximum mean detection probability is related to probability of distribution of rate series, signal-to-noise ratio and other factors. In case all rates have the same transmit power and are uniformly distributed, the detector achieves maximum mean detection probability at relative high signal-to-noise when detector bandwidth approaches the maximum rate's bandwidth. The analysis facilitates the selection of the one-dimensional detector bandwidth parameter.