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Periodic function argument converting device method and communication apparatus using same

An independent variable, compensation device technology, applied in complex mathematical operations, electrical digital data processing, digital data processing components and other directions

Inactive Publication Date: 2009-07-08
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the contrary, for any periodic function, it may involve a similar problem of transforming the independent variable into the specified period range, and the prior art has the same or similar defects when facing this problem

Method used

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  • Periodic function argument converting device method and communication apparatus using same
  • Periodic function argument converting device method and communication apparatus using same
  • Periodic function argument converting device method and communication apparatus using same

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Embodiment Construction

[0079] In order to make the object, technical solution and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0080] The main idea of ​​the present invention is to propose a transformation method for transforming the input parameters of the periodic function (that is, the independent variable of the periodic function) into a specified period range, without branch judgment, but can realize the transformation through a unified processing method. Among them, after performing specific processing on the input parameters, the entire processing process is unified when operating the numbers on specific digits, and there is no need to classify and discuss the input parameters according to which period range. In addition, the normalized input parameters can be directly sent to the next module, and it is not necessarily necessary to transform the normali...

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PUM

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Abstract

The invention discloses a cycling function independent variable transformation device that includes normalization process unit to gain locating point independent variable, independent variable transformation unit used to setting the integer part and keeping the decimal part of locating point. The invention also discloses a cycling function independent variable transformation method, sine and cosine value determine device, and the receiver and sender in communication system. The invention could sharply decrease the demand to computer resource and storage resource, and lower cost.

Description

technical field [0001] The present invention relates to the field of electronic computing devices, and more specifically, to a periodic function argument transformation device, method and communication device using the same. Background technique [0002] Modern communication systems are usually implemented based on one of digital signal processing (DSP), field programmable gate array (FPGA), application-specific integrated circuit (ASIC), or a combination of some of them. In modern communication systems, modulators, time-frequency synchronization modules, channel equalization modules, and some other modules in actual communication systems usually require a large number of sine and cosine operations. As the bandwidth of modern communication systems is getting wider and wider, the amount of data that needs to be processed per unit time is increasing, which puts forward high requirements for the speed and effectiveness of periodic operations such as sine and cosine. In additio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/15G06F7/548H04L27/01H04L27/26
Inventor 吕峻郑德来
Owner HUAWEI TECH CO LTD