Apparatus and method for digital wireless communications

Apparatus and method for digital wireless communications

  • CN 1,913,516 B
  • Filed: 01/19/2000
  • Issued: 03/27/2013
  • Est. Priority Date: 01/19/1999
  • Status: Active Grant
First Claim
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1. a digital wireless communication equipment is characterized in that, comprising:

  • The frame timing signal generator is used for the delta frame timing signal;

    The first modulator is used for generating the described pilot signal of having carried out modulation according to the first modulation system when described frame timing signal represents pilot signal;

    The second modulator, during code element before and after described frame timing signal represents described pilot frequency code element and then, to insert according to the described pilot frequency code element of the second modulation system modulation and be close to before the described pilot frequency code element and afterwards, described the second modulation system is different with described the first modulation system, and described the second modulation system is that at least two signaling points are configured in homophase-orthogonal plane modulation system on the dummy line of the signaling point that connects initial point and described the first modulation system;

    The 3rd modulator, be used for the transmission of data and described frame timing signal as input, when described frame timing signal represents that described the transmission of data carried out the digital orthogonal baseband signal of many-valued modulation, the digital orthogonal baseband signal of the described the transmission of data of modulation has been carried out in generation according to the 3rd modulation system, described the 3rd modulation system is different with described the second modulation system from described the first modulation system, described the 3rd modulation system is QPSK, 16APSK, 16QAM, among 32QAM and the 64QAM any one, the amplitude of the signaling point of described the first modulation system is greater than the peak swing according to the signaling point of described the 3rd modulation system modulation in homophase one orthogonal plane.

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