Iteration soft interference elimination receiving method under condition of large scale MIMO omnidirectional precoding transmission

Iteration soft interference elimination receiving method under condition of large scale MIMO omnidirectional precoding transmission

  • CN 105,897,627 A
  • Filed: 04/12/2016
  • Published: 08/24/2016
  • Est. Priority Date: 04/12/2016
  • Status: Active Grant
First Claim
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1. the iteration soft rot bacteria method of reseptance under an extensive MIMO omnidirectional precoding transmissions, it is characterised in that:

  • bagInclude following steps;

    1) signal that cell base station sends is the omnidirectional'"'"'s letter generated through omnidirectional'"'"'s precoding extension by low-dimensional space-time coded signalNumber;

    2) receiving terminal uses iterative technique all to carry out the omnidirectional signal from Target cell and interfered cell in the code domain that prelistsSoft-output coding detection, decoding;

    3) receiver is made up of the Soft-input soft-output decoder that soft-output coding detector is parallel with K, translates for KCode device is respectively used to Target cell and the coding soft decision of K-1 interfered cell coded-bit;

    By each community between two partsSeparately, scrambling or interleaving block are to make presence of intercell interference for specific scrambling, descrambling module or intertexture, de-interleaving blockRandomization;

    4) soft-output coding detector utilizes the coded-bit priori log-likelihood ratio that Soft-input soft-output decoder feeds backThe average of signal reconstruct interference signal and variance, thus interference signal is eliminated from reception signal, promote accuracy of detection;

    Between soft-output coding detector and Soft-input soft-output decoder, iteration exchange coded-bit external information, makes receiver takeObtain the performance of asymptotic optimality;

    5) when, after the iterations reaching regulation, information sequence is exported by hard decision by the decoder that Target cell is corresponding.

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