Mobile terminal and method for receiving data thereof
A mobile terminal and radio frequency receiver technology, applied in the field of communication, can solve the problems of initial received data distortion and affect the quality of received data, and achieve the effect of overcoming the initial received data distortion and improving the quality
Active Publication Date: 2012-03-28
ST ERICSSON SEMICON BEIJING
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Problems solved by technology
In the process of realizing the present invention, the inventors have found that after adopting an asymmetric receiving compensation filter, due to its asymmetrical characteristics, the initial receiving data will usually be distorted (refer to figure 1 ), thus affecting the quality of received data
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[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0023] refer to figure 2 , the mobile terminal of the embodiment of the present invention mainly includes: an antenna, a radio frequency receiver, and a digital baseband, and the digital baseband includes a sequentially connected decimation filter, compensation filter, root-raised cosine filter (RRC) and demodulator. The mobile terminal also includes a control unit (not shown in the figure), which is used for timing control, specifically for controlling the opening and closing time of each module in the mobile terminal.
[0024] Wherein, the compensation filter is an asymmetric filter. In this embodiment, the compensation filter is an 8th-order asymmetric finite impulse response filter (FIR), which is used to compensate the performance loss of the...
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The invention provides a mobile terminal and a method thereof for receiving data. The mobile terminal comprises an antenna, a radio frequency receiver, a digital base band and a control unit, wherein the digital base band comprises a pumping filter, a compensation filter, a root raised cosine filter and a demodulator which are connected in sequence, wherein the compensation filter is a non-symmetrical filter; and the control unit is used for turning on a data receiving switch of the digital base band before the antenna switch is turned on; and after the compensation filter is filled with noise, the data receiving switch and the antenna switch of the root raised cosine filter are turned on. The mobile terminal and the method thereof for receiving the data can effectively overcome the distortion of initially-received data caused by the asymmetry after the compensation filter is adopted, thereby improving the quality for receiving the data.
Description
technical field [0001] The invention relates to the field of communication technology, in particular to a mobile terminal and a data receiving method thereof. Background technique [0002] With the commercialization of Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system approaching, user terminal equipment, as one of the key links, has been considered as the bottleneck of industrialization due to the late start of design and development. Most of the current commercial RF transceiver architectures use analog interfaces. Although the analog interface technology is very mature, it is increasingly unable to meet the needs of design due to shortcomings such as poor flexibility and high cost. [0003] With the development and popularization of digital processing technology, the radio frequency transceiver architecture based on digital interface can meet the needs of broadband high-speed data services at a lower cost. Digital processing makes the RF front-end...
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IPC IPC(8): H04W88/02H04B1/40H04B1/3827
Inventor 苏铮
Owner ST ERICSSON SEMICON BEIJING