Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Interference cancellation method, interference cancellation auxiliary method, device, base station and terminal

A technology of interference cancellation and variance, applied in baseband systems, modulated carrier systems, transmission systems, etc., can solve problems such as residual ISI and ICI, low-complexity elimination, etc.

Active Publication Date: 2016-08-17
BEIJING SAMSUNG TELECOM R&D CENT +1
View PDF6 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] The technical problem to be solved by the present invention is that in the FBMC / OQAM system under the influence of multipath fading channel and noise, there is no effective, low-complexity solution for eliminating and / or avoiding residual ISI and ICI in the system

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Interference cancellation method, interference cancellation auxiliary method, device, base station and terminal
  • Interference cancellation method, interference cancellation auxiliary method, device, base station and terminal
  • Interference cancellation method, interference cancellation auxiliary method, device, base station and terminal

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0166] If the influence of channel fading 105 and noise is considered, the nth receiving end 0 kth in symbol slots 0 After the received signal on the sub-carriers passes through the matched filter, the output signal Expressed as:

[0167] y k 0 , n 0 = h k 0 , n 0 d k 0 , n 0 + Σ ( k , n ) ≠ ( k 0 ...

specific Embodiment 2

[0218] In Embodiment 1 of the present application, in the process of performing iterative interference cancellation on the received signal, the average value of the transmitted signal {E(d k,n )} and variance {Var(d k,n )} are initially set to zero. The second embodiment of the present application proposes a method to calculate the average value of the transmitted signal {E(d k,n )} and variance {Var(d k,n )} initial value method can speed up the completion of the iterative interference removal algorithm proposed in the first embodiment, and ensure the rapid convergence of the algorithm performance.

[0219] Figure 5 This is a schematic diagram of the principle of the sending and receiving ends of the FBMC / OQAM system based on the iterative interference cancellation receiver of the present invention in the second embodiment of the present application. By comparison Figure 5 and figure 2 It can be seen that, different from the method invented in the first embodiment of...

specific Embodiment 3

[0237] In Embodiment 1 of the present application, in the process of performing iterative interference cancellation on the received signal, the average value of the transmitted signal {E(d k,n )} and variance {Var(d k,n )} are initially set to zero. The second embodiment of the present application proposes a method to calculate the average value of the transmitted signal {E(d k,n )} and variance {Var(d k,n )} initial value method can speed up the completion of the iterative interference removal algorithm proposed in the first embodiment, and ensure the rapid convergence of the algorithm performance. However, the calculation of the initial mean value {E(d) proposed in the second embodiment of the present application k,n )} and variance {Var(d k,n )} method without preprocessing the interference. On this basis, the third embodiment of the present application proposes an improved algorithm, which calculates the initial mean value {E(d) of the transmitted signal k,n )} and v...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an interference cancellation method. The method includes the following steps that: the mean and variance of received signals are calculated, so that the statistical information of the received signals can be obtained; the estimation logarithm probability-likelihood information of the received signals is calculated according to the statistical information of the received signals; the decoding logarithm probability-likelihood information of the received signals is calculated according to the received signals according to the estimation logarithm probability-likelihood information of the received signals, and the calculation of the statistical information of the received signals is updated; and the above operation is repeated until an agreed number of iterations is achieved, hard decision is performed on the decoding logarithm probability-likelihood information of the received signals, and data bit information obtained after the hard decision is outputted. The invention also discloses an interference cancellation device, an interference cancellation auxiliary method, a base station and a terminal. With the interference cancellation method, interference cancellation auxiliary method, the interference cancellation device, the base station and the terminal of the invention adopted, influence of system performance, caused by the residual inherent interference of an FBMC / OQAM (filter bank multi-carrier / offset quadrature amplitude modulation) system can be decreased, and the spectrum use efficiency and use flexibility of the OQAM / FBMC system can be improved.

Description

technical field [0001] The present application relates to the field of wireless communication technologies, and in particular, to an interference cancellation method, an interference cancellation assistance method, an apparatus, a base station, and a terminal. Background technique [0002] The new generation of mobile communication technology has many advantages, such as simple network architecture, small signal delay, high communication quality and fast speed. Among them, Multi-carrier Modulation (MCM) technology is considered as one of the basic framework technologies of modern and future mobile communication systems. As a typical representative of the multi-carrier modulation technology, the orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) technology is widely used in broadcast audio and video fields and civil communication systems. For example, Digital Video Broadcasting (DVB) and Digital Audio Broadcasting (DAB) in Europe, V...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04L27/34
CPCH04L25/03159H04L25/03286H04L25/03331H04L25/03821H04J11/0023H04L27/2647H04L27/2698H04L27/2654H04L27/26416H04B7/0452H04L1/0053H04L1/0054H04L27/2615H04L27/366
Inventor 朱大琳喻斌孙鹏飞
Owner BEIJING SAMSUNG TELECOM R&D CENT
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com