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

Orthogonal network space-time coding method and relay transmission system

A space-time coding, orthogonal network technology, used in transmission systems, digital transmission systems, radio transmission systems, etc.

Active Publication Date: 2010-07-07
ZTE CORP
View PDF5 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] With the increase of the number of information sources in the network, when the traditional network coding is applied to the wireless communication network, the throughput of 1 / (N+1) symbol / second / user can only be obtained by using the cooperative method

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
  • Orthogonal network space-time coding method and relay transmission system
  • Orthogonal network space-time coding method and relay transmission system
  • Orthogonal network space-time coding method and relay transmission system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] refer to image 3 , here T SR =2, the orthogonal network space-time coding method provided by the present invention is divided into two stages to complete, the first stage is the source node broadcast data information stage, this stage needs T SR = 2 symbol periods, the second stage is the stage where the relay node performs network space-time coding transmission, and this stage requires two symbol periods.

[0083] The stage of the source node broadcasting data information is that Ns source nodes broadcast and send information to the relay node R and the destination node D at the same time, wherein the signals received by the relay node R and the destination node D in the t symbol period are respectively denoted as y SR (t) and y SD (t), this stage requires T SR = 2 symbol periods.

[0084] The relay node performs the network space-time coding transmission stage, and needs to complete five processes of relay node decoding, estimation information grouping, estimati...

Embodiment 2

[0098] refer to Figure 5 , here T SR =4, the orthogonal network space-time coding method provided by the present invention is divided into two stages and completes, requiring T SR +2 symbol periods, the first stage is the source node broadcast data information, this stage requires T SR = 4 symbol periods, the second stage is that the relay node performs network space-time coding transmission, and this stage requires two symbol periods.

[0099] The stage of the source node broadcasting data information is that Ns source nodes broadcast and send information to the relay node R and the destination node D at the same time, wherein the signals received by the relay node R and the destination node D in the t symbol period are respectively denoted as y SR (t) and y SD (t), this stage requires T SR = 2 symbol periods.

[0100] The relay node performs the network space-time coding transmission stage, and needs to complete five processes of relay node decoding, estimation inform...

Embodiment 3

[0115] Figure 7 It is a schematic diagram of a distributed relay network with Ns source nodes and two relay nodes. When Ts=2, the steps of the distributed orthogonal network space-time coding method are completed in two stages, and a total of T S +2=4 symbol periods.

[0116] The first stage is that the source node broadcasts data information, which requires T S = 2 symbol periods;

[0117] The second stage is the relay node R 1 and R 2 For distributed orthogonal network space-time coding transmission, this stage requires two symbol periods.

[0118] The stage of the source node broadcasting data information is that Ns source nodes simultaneously send the relay node R 1 , R 2 and destination node D to broadcast and send information, where Ns source node send signal vectors are denoted as

[0119] Relay node R 1 and R 2 The signals received in the t-th symbol period are denoted as and The signals received by the destination node D in the tth symbol period are re...

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 orthogonal network space-time coding method in wireless communication system, which is used for realizing a wireless communication network which is provided with a plurality of source nodes, wherein, each of the source nodes is provided with an antenna, and a relay node is provided with two antennas; the invention aims at solving the technical problem of low throughput and large diversity loss for the existing wireless relay network. The invention is divided into two steps: the source node broadcasts data information to the relay node and a destination node, and the relay node transmits the orthogonal network space-time coding, wherein, the latter step is also divided into five processes: relay node decoding, grouping estimated information, compressing estimated information, space-time coding of compressed data and space-time transmission; the two steps totally need TSR +2 symbol period. The invention divides the estimated information in the TSR+2 symbol period for the relay node into two groups for space-time coding, and completes sending within two symbol periods, the throughout can reach TSR / (TSR +2) symbol / user / symbol period, thereby increasing the throughout of the relay network and reducing the diversity loss.

Description

technical field [0001] The invention relates to wireless communication network coding technology, in particular to an orthogonal, distributed orthogonal network space-time coding method and a relay transmission system based on the method. Background technique [0002] The next generation of wireless mobile communication will provide more high-speed multimedia services and data services, and multipath fading in mobile channels is one of the most important bottlenecks affecting communication quality and transmission rate. Using relay technology to provide additional diversity gain for mobile users and eliminate the effects of multipath fading is one of the research hotspots in recent years. However, in a large-scale wireless relay communication network, usually multiple source nodes and multiple relay nodes coexist. Traditional relay solutions, such as single-antenna relay and MIMO relay, need to forward data one by one for each source node. , so that the transmission efficie...

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): H04L1/06H04B7/06
CPCH04B7/15521H04L1/0618H04B7/15592H04L1/0077H04L2001/0097
Inventor 姜静李颖孙云锋田开波李峰张元龙
Owner ZTE CORP
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