Collaboration communication method of high-efficiency frequency spectrum utilization ratio

A cooperative communication and utilization rate technology, applied in the communication between multiple stations, diversity/multi-antenna system, etc., can solve the problem of spectrum utilization rate decline, achieve high spectrum utilization rate, balanced reliability, and improve bit error performance effect

A cooperative communication and utilization rate technology, applied in the communication between multiple stations, diversity/multi-antenna system, etc., can solve the problem of spectrum utilization rate decline, achieve high spectrum utilization rate, balanced reliability, and improve bit error performance effect

CN101656560AInactive Publication Date: 2010-02-24BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Collaboration communication method of high-efficiency frequency spectrum utilization ratio
  • Collaboration communication method of high-efficiency frequency spectrum utilization ratio
  • Collaboration communication method of high-efficiency frequency spectrum utilization ratio

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Embodiment Construction

[0020] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. This embodiment is implemented on the premise of the technical solution of the invention, and a detailed implementation manner and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0021] figure 1 It is a system model diagram of the cooperative communication method with high spectrum utilization rate of the present invention, including two user nodes (A and B) and one destination node (D). Both A and B need to communicate with D, and they are users who cooperate with each other. They can be both source nodes and relay nodes, but not at the same time. When A sends data, B receives A's data as a relay node, and then superimposes its own information on the information that needs to be relayed and sends it out, and vice versa. Among them, h AD 、h BD 、h AB and h BADenote ...

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Abstract

The present invention discloses a collaboration communication method for improving frequency spectrum utilization ratio in wireless communication field, for principally resolving a problem that a traditional collaboration communication system reduces the frequency spectrum utilization ratio when dividing time slot. The method is implemented by the following steps: a node A modulates information ofown and information of a node B received at a last time slot by mapping schemes C1 and C2, and orthogonally adds the two-road modulation signals together and broadcast; the node B modulates local information and relay information by mapping schemes C3 and C4, then broadcasts adding modulation symbols; a destination node D demodulates received two-road adding symbols unitedly and obtains information of the node A. The node D obtains the information of the node A by an identical collaboration communication method. The invention ensures a user node to transmit the local information and the relayinformation simultaneously, which improves the systemic frequency spectrum utilization ratio, and further improves error code performance of the collaboration system and ensures communication qualitywithout addition of system complexity.

Description

technical field [0001] The invention relates to a cooperative communication method in the field of wireless communication, in particular to a cooperative communication method with high spectral efficiency, which is used in a cooperative communication system. Background technique [0002] Since the development of wireless communication, people's demand for wireless transmission data rate and service quality has been continuously improved, but the multipath fading of signal transmission in wireless communication has always been an important bottleneck that plagues the improvement of wireless data transmission rate and service quality. How to overcome the multipath effect It has become the primary problem to be solved to improve the communication quality. Although Multiple Input Multiple Output (MIMO) technology has obvious advantages in anti-multipath fading and improving the speed and quality of communication links, due to the limitations of mobile terminals and volume, it is...

Claims

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Application Information

Patent Timeline
24 Feb 2010
Publication
CN101656560A
IPC
H04B7/02; H04B7/26
Inventors
费泽松; 桓双