Distributed compression forwarding system of multi-relay network under Gaussian source and design method

A relay network and forwarding system technology, applied in the field of distributed compression and forwarding systems, can solve the problems of transmission performance research and design of communication networks without sensors, and achieve strong anti-interference performance and good transmission performance

Inactive Publication Date: 2017-07-21
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0021] Regarding the CEO problem of distributed source coding in the simulated sensor network, only the rate-distortion area and code rate after the distri

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  • Distributed compression forwarding system of multi-relay network under Gaussian source and design method
  • Distributed compression forwarding system of multi-relay network under Gaussian source and design method
  • Distributed compression forwarding system of multi-relay network under Gaussian source and design method

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Embodiment Construction

[0052] The present invention will be further described in detail below through the specific examples, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention with this.

[0053] Those skilled in the art can understand that unless otherwise defined, all terms used herein have the same meanings as commonly understood by those of ordinary skill in the art to which the present invention belongs. It should also be understood that terms such as those defined in commonly used dictionaries should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless defined as herein Explanation.

[0054] Distributed compression and forwarding system and design method of multi-relay network under Gaussian source, including source S, relay node R i and the receiving end D, where i=1,2...L, L represents the number of relay ...

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Abstract

The invention discloses a distributed compression forwarding system of a multi-relay network under a Gaussian source and a design method. A source sends a simulated Gaussian signal, performs distributed source coding at a relay node, and performs the digital transmission. Since the simulated signal is transmitted, the index for system performance evaluation is the signal-to-noise ratio. A theoretical analysis frame of the system is proposed in consideration that the sending power of each relay node is the same and all noises powers are the same under an additive Gaussian white noise channel, a rate-distortion function of the multi-relay network is established by use of the CEO theory, and the connection between a sensing network and a digital communication network is established in combination with a Shannon channel capacity theory. An optimal design theory method of the system is proposed, and the power distribution is performed between the sensing network and a communication network based on the signal-to-noise rate under a condition that the total power is limited, thereby enabling the signal-to-noise rate to achieve the maximum. The theoretical analysis and the simulation result show that the optimal compression forwarding system provided by the invention can provide better signal-to-noise ratio in comparison with an amplification forwarding system.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a distributed compression and forwarding system and a design method of a multi-relay network under a Gaussian source. Background technique [0002] Wireless relay technology can effectively combat channel fading, expand wireless network coverage, increase system capacity, increase diversity gain, improve information reliability, and improve communication quality, and is widely used in various wireless communication systems. For example, satellite communication and microwave relay communication system are classic wireless relay communication systems. In mobile communication, the use of relay stations to expand signal coverage and improve system capacity has become a key technology in mobile communication systems. In addition, the popularity and wide application of wireless analog sensor networks in military reconnaissance, environmental monitoring, smar...

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Application Information

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IPC IPC(8): H04W28/06H04L1/00H04B17/336H04B17/391H04B17/40
CPCH04L1/0014H04W28/065H04B17/336H04B17/391H04B17/40Y02D30/70
Inventor 张瑞丹徐大专许生凯
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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