Multi-user reception method of zero-forcing and successive interference cancellation based on interference synthesis

A technology of serial interference elimination and reception method, applied in baseband system components, shaping network in transmitter/receiver, baseband system, etc., can solve problems such as hindering unscheduled user information transmission, not supporting burst communication, etc.

Active Publication Date: 2016-01-06
CERTUS NETWORK TECHNANJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the scheduling algorithm will hinder the information transmission of unscheduled users, and does not support burst communication

Method used

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  • Multi-user reception method of zero-forcing and successive interference cancellation based on interference synthesis
  • Multi-user reception method of zero-forcing and successive interference cancellation based on interference synthesis
  • Multi-user reception method of zero-forcing and successive interference cancellation based on interference synthesis

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] figure 1 It is the system model of embodiment 1. For simplicity of implementation, only a communication system composed of three transmitters and one receiver is studied, and the receiver configuration N R = 2 receiving antennas, each transmitter is equipped with N T =2 antennas, each transmitter only sends one-way data, then the number K=3 of sent data, the embodiment of the present invention only studies that all transmitters all adopt binary phase-shift keying modulation (BinaryPhase-ShiftKeying, BPSK), modulation Mode information L=2. It should be noted that the present invention is not limited to the situation that all transmitters adopt the same modulation mode. When the modulation modes used by different transmitters are different, L is the one with the largest modulation order among the modulation modes used. Modulation information.

[0038] Such as figure 2 As shown, the receiving method in Embodiment 1 of the present invention specifically includes the fo...

Embodiment 2

[0054] On the basis of Embodiment 1, when the number of antennas configured by each transmitter is different, each transmitter transmits data in a different manner. When the number of transmitting antennas N T When = 1, the transmitter adopts the omnidirectional transmission mode to send one path of data. At this time, the h corresponding to the transmitter whose number of transmitting antennas equals 1 in embodiment 1 k p k should be replaced by h k , the spatial feature of the transmitted signal corresponding to the transmitter at the receiving end becomes e k = h k ; When the number of transmitting antennas N T When ≥2, the transmitter transmits one channel of data in a beamforming transmission manner, as described in Embodiment 1 above.

[0055] The embodiment of the present invention also lies in that in the fifth step, when the number of transmitted signals is greater than the number of receiving antennas N R When , the interference synthesis is performed first, so...

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Abstract

The invention discloses a multi-user reception method of zero-forcing and successive interference cancellation based on interference synthesis. Multiple transmitters and a common receiver are included, the receiver obtains channel state information among the transmitters and modulation manner information of the transmitters, the signal amount at the reception end is decreased to the amount of reception antennas via interference synthesis, a zero-forcing reception filtering matrix is calculated according to different signal synthesis states, mixed signals are filtered, the filtering performance is compared, a reception symbol is decided, influence of the decoded symbol on residual component of the mixed signal is eliminated by utilizing the successive interference cancellation method, and interference synthesis, filtering matrix calculation, comparison and decision are carried out repeatedly on the residual mixed signals till all sending symbols are recovered. Based on interference synthesis, zero-forcing and successive interference cancellation is utilized to recover all the sending symbols under the condition that reception antennas are not enough, and the amount of users that can be accommodated is improved.

Description

technical field [0001] The invention belongs to a signal receiving method in the technical field of mobile communication, in particular to a multi-user receiving method based on interference synthesis based on zero-forcing and serial interference cancellation (SuccessiveInterferenceCancellation, SIC), which is used for a receiver to recover multiple signals with co-channel interference. Scenarios for multi-channel signals, such as multiple access channels. Background technique [0002] With the development of mobile communication technology, the traditional time-frequency signal design has been difficult to meet people's requirements for higher and higher transmission rates of wireless links. People began to try to explore communication opportunities from multiple dimensions, and airspace resources are one of them. important aspect. Multiple Input Multiple Output (Multiple Input Multiple Output, MIMO) technology is a breakthrough technology in the field of wireless communic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/08H04B7/06H04B7/04H04L25/03
CPCH04B7/0456H04B7/0617H04B7/0854H04B7/0857H04L25/0328H04L25/03299
Inventor 李钊戴晓琴丁汉清肖丽媛赵林靖刘勤
Owner CERTUS NETWORK TECHNANJING
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