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Selection between two different coding schemes and corresponding modulation shemes according to the allowable transmission delay of the data

A modulation scheme and coding scheme technology, applied in the field of processor systems, can solve the problems of not effectively using channels, transmitter defects, etc.

Inactive Publication Date: 2008-09-17
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In particular, known transmitters are deficient since the channel is not used efficiently

Method used

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  • Selection between two different coding schemes and corresponding modulation shemes according to the allowable transmission delay of the data
  • Selection between two different coding schemes and corresponding modulation shemes according to the allowable transmission delay of the data
  • Selection between two different coding schemes and corresponding modulation shemes according to the allowable transmission delay of the data

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] The transmitter according to the invention forms part of a transceiver 1 comprising an antenna interface 2 similar to devices such as switches and / or duplexers, an input / output of which is connected to the antenna coupled, and an output of this interface is coupled to an input of a first receiving interface 3 similar to devices such as amplifiers and / or filters, and the output of the first receiving interface 3 is connected to the first demodulator 4 and the input terminal of the second demodulator 5 are coupled. An input of the antenna interface 2 is coupled to an output of a first transmit interface 6 similar to devices such as amplifiers and / or filters, while an input of the first transmit interface 6 is coupled to the first modulator 7 and the first The output terminal of the second modulator 8.

[0038] The transceiver 1 also includes a connector interface 9, the input / output of which is coupled to an external unit, such as a personal computer, etc., and one of it...

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PUM

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Abstract

Transmitters comprising detectors (32) for detecting packet data to be transmitted are provided with selectors (34) for in response to detection results of real-time requirements selecting first coding schemes and first modulation schemes like convolutional codes and adaptive orthogonal frequency division modulation schemes and for in response to non-real-time requirements selecting second coding schemes and second modulation schemes like turbo codes and orthogonal frequency division modulation schemes, to transmit with increased efficiency. Further detection results comprise target bit error rates and / or a payload bit rates, and further detectors (33) detect channel conditions. A processor system (20) runs adaptive algorithms for evaluating a maximum available bit rate in dependence of said channel conditions and / or margin adaptive algorithms for computing a bit loading in dependence of an actual bit rate. A code rate adapter (35) adapts code rates for said computing, and a generator (36) generates code rates and / or block lengths, numbers of iterations, code parameters.

Description

technical field [0001] The present invention relates to a processor system for use in a transmitter for transmitting packet data, and to a method for transmitting packet data. Background technique [0002] Such transmitters form, for example, part of transceivers for sending and receiving packet data, and transceivers form part of equipment such as mobile phones, base stations, nodes, wireless local area networks or wireless units. [0003] A prior art method for transmitting packet data is known from US2001 / 0010687, which discloses detecting the service option of the packet and assigning a control or traffic channel for said transmission in response. [0004] In particular, known transmitters are deficient in that the channel is not used efficiently. [0005] US2002 / 0054578 describes a cross layer structure for delivering multimedia streams in an adaptive multimedia wireless network. A resource management mechanism dynamically allocates resources among different media str...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L27/26
CPCH04L27/2608H04L1/0017H04L1/0009H04L1/0003H04L5/0044H04L27/26H04L1/00
Inventor G·吉罗拉G·帕坦格希C·沃尔佩
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
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