Unlock instant, AI-driven research and patent intelligence for your innovation.

Sending method, device and system in relay system

A relay system and data technology, applied in the field of communication, can solve problems such as limited system throughput, and achieve the effect of improving throughput

Active Publication Date: 2012-01-11
HUAWEI TECH CO LTD +1
View PDF1 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the process of realizing the present invention, the inventor found that since the subcarrier channels in the two hops are independent of each other, the system throughput is limited when the signal is placed in the same subcarrier for transmission in the two hops

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
  • Sending method, device and system in relay system
  • Sending method, device and system in relay system
  • Sending method, device and system in relay system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0027] The scheme of the embodiment of the present invention considers subcarrier pairing and power allocation jointly through convex optimization theory, fully analyzes the coupling relationship between subcarrier pairing and power allocation, and achieves subcarrier pairing and power allocation through a convex optimization solution. The joint optimization of power allocation improves the throughput of the whole system.

[0028] There is a coupling relationship b...

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 embodiment of the invention discloses a sending method, a device and a system in a relay system, wherein the method comprises the following implementation steps that: the power distribution results of sub carrier waves used for sending data by a source node and a relay node are obtained; the sub carrier wave pairing results are obtained by a convex optimization method according to the coupling relationship of the sub carrier wave pairing and the power distribution results, wherein the sub carrier wave pairing results are as follows: the sub carrier waves k and the sub carrier waves n are paired, the sub carrier waves k are sub carrier waves used for receiving the data sent by the source node, and the sub carrier waves n are sub carrier waves used for sending the data to the target nodes; the convex optimization theory is adopted for considering the sub carrier wave pairing and the power distribution in a combined way, the coupling relationship of the sub carrier wave pairing and the power distribution is sufficiently analyzed, and the optimum combination of the sub carrier wave pairing and the power distribution is reached by the proper convex optimization method, so the throughput of the whole system is improved.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a method, device and system for sending data in a relay system. Background technique [0002] Since the cooperative relay system can improve the transmission rate and transmission reliability of the wireless communication system, it is widely used. Relay transmission strategies including Amplify-and-Forward (AF) and Decode-and-forward (DF) have also been deeply studied. A multi-carrier two-hop relay system based on Orthogonal Frequency Division Multiplexing (OFDM) has attracted attention because of its excellent performance of OFDM. [0003] In the OFDM-based multi-carrier two-hop relay system, there are two key issues that need to be solved urgently: power allocation among subcarriers and subcarrier pairing. Previous studies have proved that optimal power allocation or pairing of subcarriers can improve the throughput of the system. Without considering subcarrie...

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): H04W16/10H04W52/34H04W52/46H04L27/26
Inventor 王德胜俞锦蒋小奎
Owner HUAWEI TECH CO LTD