Unlock instant, AI-driven research and patent intelligence for your innovation.

Communication and related receiver

A communication system and receiver technology, applied in the field of communication systems, can solve problems such as reducing complexity and not being able to use modulation methods

Inactive Publication Date: 2008-07-02
INTEL MOBILE COMM GMBH
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it cannot exploit the properties of a properly defined modulation method in order to reduce the complexity

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Communication and related receiver
  • Communication and related receiver
  • Communication and related receiver

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] The invention is explained below, for example, on the basis of MSK-modulated (minimum shift keying) signals for the noise-free situation. However, the invention is not restricted thereto, but is generally applicable to all types of angle modulation, in particular to all CPFSK modulation methods (continuous phase frequency shift keying), as used for example according to the DECT or GSM mobile radio standards.

[0038] With MSK modulation, the phase of the carrier signal depends on the binary d to be transmitted k ∈ {-1, 1} or offset -π / 2 or +π / 2.

[0039] The high-frequency MSK signal X transmitted by the transmitter 25 indicated in FIG. 1 via the transmit antenna 26 and received by the receiver 27 via the receive antenna 1 RF (t) generally has the form:

[0040]

[0041] where ω 0 Indicates the carrier frequency, means zero phase, denotes the phase deviation between the signal received at HF ​​and the signal of the local oscillator (not indicated in FIG. 1 ) i...

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

No PUM Login to View More

Abstract

Angle-modulated signals are transmitted in a communications system. Coding information is inserted into the data to be transmitted (dk) at regular intervals and phase-modulated together with said data to be transmitted (dk). This coding process is used for pulse shaping so that the receiver (27) can recover the digital data to be transmitted (dk) by processing the signal accordingly without the carrier phase being regulated and therefore, more simply.

Description

technical field [0001] The invention relates to a communication system in which angle adjustment signals, in particular MSK signals (Minimum Shift Keying) are transmitted and to corresponding receivers. Background technique [0002] In cordless communication systems such as the DECT system (Digital European Cordless Telephone) or radio systems operating in the so-called disallowed ISM frequency band (Industrial Science Medical) superheterodyne receivers are often used for receiving and demodulating the phase modulation signal of. In order to achieve higher system integration and thus lower system outlay, so-called low-IF (intermediate frequency) or zero-IF (homodyne) receivers are increasingly used, which do not require external filters for image suppression. A low IF receiver uses a relatively low intermediate frequency, which is about 1 MHz for an input signal frequency of about 2 GHz, and 0 MHz in a zero IF receiver. In receivers of this type, the demodulation of the ph...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/18H04L27/233H04L27/14
CPCH04L27/18H04L27/2332
Inventor A·纽鮑尔
Owner INTEL MOBILE COMM GMBH