Synchronization method and device for sc-fde system with low signal-to-noise ratio
A SC-FDE, low signal-to-noise ratio technology, applied in the field of communication, can solve problems such as poor synchronization performance, achieve good synchronization performance, ensure accuracy, and achieve the effect of large detection range
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[0058] The invention relates to a low signal-to-noise ratio SC-FDE (Single Carrier Frequency Domain Equalization, single carrier frequency domain equalization) system synchronization algorithm in a wide-area Internet of Things M2M communication system, which is suitable for low Signal-to-noise ratio SC-FDE system.
[0059] figure 1 It is a structural schematic diagram of the data frame adopted in the low SNR SC-FDE system synchronization method of the present invention. Such as figure 1 As shown, in the present invention, the data frame used for the communication between the sending end and the receiving end of the low SNR SC-FDE system includes a training sequence, a cyclic prefix CP and a payload (ie, data symbols). Wherein, the training sequence includes a first training sequence A and a second training sequence B, and the first training sequence A is composed of a ZC sequence with a period length of L1 repeated T1 times, and the second training sequence B is composed of ...
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