Autocorrelation transmission method, device and system
A transmission method and technology of sending equipment, applied in the field of signal processing, can solve problems such as high system power consumption, limited transmission rate, complex system architecture, etc., and achieve the effects of reducing system power consumption, simplifying algorithms, reducing complexity and
Active Publication Date: 2013-12-25
HUAWEI TECH CO LTD +1
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Problems solved by technology
[0003] However, the inventors found that the existing self-coherent transmission method utilizes the phase information of the signal, so that the transmission rate is limited, but the scalability is not strong
At the same time, although the overall architecture of the self-coherent transmission system has been significantly simplified compared with the coherent transmission system, the overall system architecture is still too complex for the self-coherent transmission system alone, resulting in excessive system power consumption
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[0066] 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 making creative efforts belong to the protection scope of the present invention.
[0067] Because the system architecture of the traditional coherent transmission method is too complex, and the cost, size and power consumption of the system are too high. The self-coherent detection method can simplify the complexity of the system architecture, and can also ensure the transmission performance of the system. Therefore, nowadays, the self-coherent detection method is usually used to increase the channel transmission capacity. There are two exis...
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The embodiment of the invention discloses an autocorrelation transmission method, device and system and relates to the field of signal processing so that system complexity and system power consumption can be reduced. The method specifically includes: a sending device arraying data signals and fixed code elements alternatively so that at least one path of alternatively arrayed electrical signals is generated; the sending device converting the at least one path of alternatively arrayed electrical signals into at least one path of high-order level signals, and carrying out electro-optical modulation on the at least one path of high-order level signals so that at least one path of modulation light signals is generated, wherein the modulation light signals include data light signals corresponding to the data signals and local-oscillation light signals corresponding to the fixed code elements; and the sending device sending the at least one path of modulation light signals to a receiving device so that the receiving device restores the data signals through demodulation of the at least one path of modulation light signals. The autocorrelation transmission method, device and system are applied to signal modulation and demodulation.
Description
technical field [0001] The present invention relates to the field of signal processing, in particular to a self-coherent transmission method, device and system. Background technique [0002] Limited by the system bandwidth, in order to increase the channel transmission capacity, the coherent detection method is usually used to increase the channel transmission capacity to improve the system's signal-to-noise ratio tolerance. Specifically, coherent transmission on the line side is usually an effective way to achieve large-capacity transmission. This coherent detection method needs to introduce a local oscillator signal at the receiving end to achieve demodulation, and needs to analyze the frequency difference and phase difference between the local oscillator light and the carrier. Therefore, the implementation is more complicated, and the cost, power consumption and size are relatively high. Therefore, various self-coherent transmission methods have been proposed to simplify ...
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Login to View More IPC IPC(8): H04L27/18H04L27/227H04L27/02H04B10/25
Inventor 吕超刘伯涛延双毅王大伟陈微
Owner HUAWEI TECH CO LTD