Double sampling method for physical layer network encoding and corresponding data processing method
A network coding and data processing technology, applied in the field of communication, can solve the problems of performance impact, not involving multipath fading channels, etc., and achieve the effect of reducing the bit error rate
Inactive Publication Date: 2015-11-25
SHENZHEN RES INST THE CHINESE UNIV OF HONG KONG
View PDF6 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] In asynchronous physical layer network coding [2][3], the author mainly studies the application of physical layer network coding in additive white Gaussian noise (AWGN) channel, so it does not involve the situation of multipath fading channel
Although the paper [4] involves the application of physical layer network coding in frequency selective channels, the author assumes that the channel in the network is completely symmetrical, which is not realistic
The article [5] solves the problem caused by multipath fading to the physical layer network coding in frequency, but in the frequency domain, the performance of the system is often affected by the carrier frequency deviation (CFO)
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0019] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.
[0020] Such as figure 1 As shown, a relay network with multipath fading channels consists of multiple terminal nodes A, B, C, D, a relay node R and multipath fading channels 1-6. Due to the relatively large distance between the terminal nodes, the communication between the terminal nodes must go through the relay node R. In the case of physical layer network coding, A and B each need 2 time slots to exchange a piece of information: in the first time slot, A and B simultaneously send their own information x A [n] and x B [n], after the relay node receives and processes the encoded information in the second time slot Broadcast out. After terminal nodes A and B receive the broadcast information, they can respectively decode and obtain the other party's information.
[0021] The key to physical layer network coding lies in how n...
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
Login to View More Abstract
The invention provides a double sampling method for physical layer network encoding and a corresponding data processing method. When two terminal modes interact information, the two terminal modes simultaneously send data to a relay node within a first time slot. On the relay node, to reduce the decoding error rate, a corresponding matching filter is established via parameters of a multipath fading channel, double rate sampling is carried out on a received signal, the sampled data are decoded to obtain new encoding information, and then the encoding information is broadcasted within a second time slot. After receiving the encoding information, the terminal modes can decode the information of the opposite party according to the sent information. Therefore, the error rate is effectively reduced.
Description
technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a double sampling method of physical layer network coding and a corresponding data processing method. Background technique [0002] In recent years, with the advancement of wireless communication technology and the large-scale application of mobile Internet, wireless network and communication has become an increasingly popular network access method and communication technology, which has profoundly changed people's lives. With the expansion of network scale and the rapid growth of data communication, this brings new challenges to the existing wireless communication technology. The application of physical layer network coding [1] in wireless network is a research hotspot in recent years. Physical layer network coding utilizes the superposition characteristics of electromagnetic waves in the transmission process to further tap the communication potential of wirel...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/711H04B7/155H04L25/03
CPCH04B1/711H04B7/15521H04L25/03993
Inventor 张明龙路璐
Owner SHENZHEN RES INST THE CHINESE UNIV OF HONG KONG