| 摘要 |
<p>A wireless spread spectrum communication system (14) for transmitting data includes a plurality of end point transmitters (40) and at least one receiver (42). The end point transmitters transmit data via a frequency hopped spread spectrum signal where the transmitting signal is sent without the benefit of frequency stabilization. The receiver (42) is responsive to the frequency hopping spread spectrum signals and includes a correlator and a signal processor (52). The correlator samples at least a first portion of a preamble of the signal and correlates the portion of the preamble with known preamble pattern to determine a probalitity of correlation. The signal processor (52) applied a Fast Fourier Transform algorithm to the signal in response to the probability of correlation to track a narrowband frequency of the signal based on at least a second portion of the preamble and to decode data encoded within the signal subsequent to the preamble.</p> |
