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A transmitter for transmitting a packet and a method for transmitting a packet thereof

A technology for transmitters and modulated signals, which is applied in a variety of modulation transmitter/receiver arrangements, digital transmission systems, electrical components, etc., can solve problems such as spectrum leakage, and achieve the effect of improving performance

Active Publication Date: 2019-05-07
BEKEN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the power amplifier (PA) is in high power mode at the moment of switching, this switching will cause spectral leakage during transmission

Method used

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  • A transmitter for transmitting a packet and a method for transmitting a packet thereof
  • A transmitter for transmitting a packet and a method for transmitting a packet thereof
  • A transmitter for transmitting a packet and a method for transmitting a packet thereof

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Embodiment Construction

[0014] Various aspects and examples of the invention will now be described. The following description provides specific details for a thorough understanding and implementation of the illustrative examples. However, it will be understood by those skilled in the art that the present invention may be practiced without many of these details. Also, some well-known structures or functions may not be shown or described in detail to avoid unnecessarily obscuring the related description.

[0015] The terms used in the description set forth below are intended to be interpreted in their broadest reasonable manner, even when used in conjunction with the detailed description of certain specific examples of the invention. Certain terms may even be emphasized below, however, in this Detailed Description section, any term that is intended to be interpreted in any limiting manner will be explicitly and specifically defined.

[0016] figure 1 is a circuit diagram showing a transmitter 100 fo...

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Abstract

A switching unit includes a coordinate rotation digital computer (CORDIC) unit configured to estimate a maximum phase difference between a phase of a GFSK modulation signal to be switched and a phaseof a switched QPSK modulation signal; a timing unit communicatively coupled to the CORDIC unit and configured to generate an adaptive step length according to a switching time and the estimated maximum phase difference, wherein the CORDIC unit is further configured to generate an adjusted GFSK modulated signal by adjusting a phase of the GFSK modulated signal to be switched according to the estimated maximum phase difference and the adaptive step size.

Description

technical field [0001] The present application relates to packet transmission technology, and more particularly, but not exclusively, to a transmitter and method for sending Bluetooth packets. Background technique [0002] The process of packet transmission usually requires switching from Gaussian Frequency Shift Keying (GFSK) mode to Quadrature Phase Shift Keying (QPSK) mode. Such switching will cause spectral leakage during transmission since the power amplifier (PA) is in high power mode at the moment of switching. Therefore, it is desirable to reduce spectral leakage. Contents of the invention [0003] According to an embodiment of the invention, a transmitter for transmitting packets, wherein the transmitter is configured to switch from a Gaussian Frequency Shift Keying (GFSK) modulated signal to a Quadrature Phase Shift Keyed (QPSK) modulated signal , the transmitter includes a switching unit comprising a coordinate rotation digital computer ( a CORDIC) unit; a ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/12H04L27/18H04L27/00
CPCH04B1/0475H04B2001/0408H04L27/0008H04B1/04
Inventor 不公告发明人
Owner BEKEN CORP