Digital transmitter, digital receiver, medium radio frequency sub-system and signal processing method
A technology for digital receivers and transmitters, applied in transmission systems, diversity/multi-antenna systems, transmission control/equalization, etc., can solve the problem that the same base station cannot support multiple services, etc.
Active Publication Date: 2009-06-17
HUAWEI TECH CO LTD
View PDF0 Cites 16 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0033] In view of this, the purpose of the embodiment of the present invention is to provide a digital transmitter, a digital receiver, an intermediate radio frequency subsystem and a signal processing method to solve the current There is a problem that the same base station cannot support multiple services in the technology
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
[0081] see Figure 4aand Figure 4b As shown, the digital transmitter and digital receiver in the intermediate radio frequency subsystem of the embodiment of the present invention are general digital transmitters and general digital receivers. The general digital transmitter is used to convert the downlink digital baseband signal from the baseband subsystem to an integer rate, perform fractional rate conversion on the integer rate converted signal according to the preset filter coefficient, and send it to the DAC module; general digital receiver, used for digital down-conversion and power detection processing and integer rate conversion processing of the received digital signal from the ADC module, and performs integer rate conversion processing on the data after the integer rate conversion processing according to the preset filter coefficient Fractional rate conversion, and then the obtained uplink digital baseband signal is sent to the baseband subsystem.
[0082] The radi...
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 discloses a universal digital transmitter, which solves the problem of unavailable support of several services of one base station in the prior art. The universal digital transmitter comprises a universal rate conversion module which is used to conduct the universal multi-phase interpolation filter processing for downlink baseband signals from a radio frequency interface module of abaseband in order to realize the fraction fold conversion of signal rate, a first integer rate conversion module for conducting the integer rate conversion processing for the signals after the fraction fold conversion, a processing module for predistortion and digital frequency changing and the like which is used for outputting the signals after the integer rate conversion to a digifax conversionunit DAC after being processed with the predistortion and the digital frequency changing. Simultaneously, the invention discloses a universal digital receiver, an intermediate radio frequency subsystem and a signal processing method thereof.
Description
technical field [0001] The invention relates to the technical field of communication, in particular to a digital transmitter, a digital receiver, an intermediate radio frequency subsystem and a signal processing method. Background technique [0002] In a wireless communication system, a base station generally includes subsystems such as clock, transmission, monitoring, baseband, and intermediate radio frequency. In the uplink, the intermediate radio frequency subsystem transforms the digital baseband signal from the baseband subsystem into a radio frequency signal and sends it to the wireless space after a series of digital and analog processing. In the downlink, the intermediate radio frequency subsystem receives the radio frequency signal from the antenna, and after a series of analog and digital processing, it converts it into a digital baseband signal and transmits it to the baseband subsystem. [0003] figure 1 It is a schematic structural diagram of an intermediate r...
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 IPC IPC(8): H04B7/02H04B7/005
CPCH04B1/04
Inventor 叶四清朱尔霓邓杰锋伊果·潘可夫切尔尼科夫·安东
Owner HUAWEI TECH CO LTD