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Signal processing method, junction centre, base station and network system

A signal processing and signal technology, applied in the transmission system, wavelength division multiplexing system, electromagnetic wave transmission system, etc., can solve the problem of high cost of optical fiber construction, achieve the effect of reducing system cost and optimizing network structure

Inactive Publication Date: 2009-05-13
HUAWEI TECH CO LTD
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Problems solved by technology

[0004] The present invention provides a signal processing method, a central station, a base station and a network system to solve the problem of high construction costs caused by increasing the number of base stations and correspondingly increasing the number of optical fibers in a wireless system, such as an optical fiber wireless network

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  • Signal processing method, junction centre, base station and network system
  • Signal processing method, junction centre, base station and network system
  • Signal processing method, junction centre, base station and network system

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Embodiment Construction

[0040] figure 1 It is a schematic flow diagram of the method of the first embodiment of the present invention, including:

[0041] Step 11: The sending end device, such as the central station in the optical fiber wireless network, performs multiplexing processing on the subcarrier signals carrying the communication data. Wherein, the subcarrier is the radio frequency / millimeter wave generated by the central station. Since the existing signal carriers are mainly concentrated in the low-frequency band, low-frequency resources are tight, and even if it is adopted, it will cost a lot; and radio frequency / millimeter wave is high-frequency, and the communication frequency band that can be used is very wide, for example, at 60GHz In the millimeter wave system, there is a frequency band around 7 GHz that can be used freely, so this embodiment uses radio frequency / millimeter wave (subcarrier) as a carrier for carrying communication data.

[0042] Step 12: The sending end device sends...

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Abstract

The invention discloses a method for processing a signal, a junction station, a base station and a network system thereof. The method comprises the following steps: a subcarrier signal carrying communication data is subject to multiplexing processing; and the multiplexed subcarrier signal is transmitted, wherein the multiplexing processing comprises single subcarrier multiplexing, combination of subcarrier multiplexing and optical wavelength-division multiplexing, and combination of subcarrier multiplexing and optical add drop multiplexing. Only down link carrier wave is multiplexed during optical wavelength-division multiplexing; or, down link carrier wave and up link carrier wave can be simultaneously multiplexed. Through the embodiment of the invention, optical fiber wireless system capacity can be improved.

Description

technical field [0001] The invention relates to optical fiber wireless communication technology, in particular to a signal processing method, a central station, a base station and a network system. Background technique [0002] At present, the operating frequency bands of most wireless communication services are concentrated below 5GHz, and the existing low-frequency frequency resources have almost been allocated. In the future, it is necessary to increase the operating frequency of wireless carriers to increase the capacity of wireless communication systems. The communication frequency adopted by the wireless communication technology will be extended to the millimeter wave band. However, when the electromagnetic wave in the millimeter wave propagates in the atmosphere, the loss caused by absorption and reflection will increase significantly, and the transmission distance will be limited; at the same time, the cost of millimeter wave communication devices is high, which is n...

Claims

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Application Information

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IPC IPC(8): H04B10/12H04J14/02
CPCH04J14/0298H04J14/0201
Inventor 于弋川
Owner HUAWEI TECH CO LTD
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