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Method and system for designing high-performance low-complexity TCM-4CPM (Trellis coded modulation and 4 continuous-phase modulation

A TCM-4CPM, low-complexity technology, applied in transmission systems, digital transmission systems, modulated carrier systems, etc., to achieve the effects of ensuring effectiveness and reliability, simplifying design, and high-band utilization

Active Publication Date: 2013-05-22
SICHUAN JIUZHOU ELECTRIC GROUP
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Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide a high-performance and low-complexity TCM-4CPM design method and system, which has solved the problem of effective and reliable transmission of information in channels with limited power and frequency bands

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  • Method and system for designing high-performance low-complexity TCM-4CPM (Trellis coded modulation and 4 continuous-phase modulation
  • Method and system for designing high-performance low-complexity TCM-4CPM (Trellis coded modulation and 4 continuous-phase modulation
  • Method and system for designing high-performance low-complexity TCM-4CPM (Trellis coded modulation and 4 continuous-phase modulation

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[0057] Certain terms are used, for example, in the description and claims to refer to particular components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a criterion for distinguishing. As mentioned throughout the specification and claims, "comprising" is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect. In addition, the term "coupled" includes any direct and indirect electrical connection means. Therefore, if it is described that a first device is coupled to a second device, it means that the first device may be directly electrical...

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Abstract

The invention discloses a method and a system for designing high-performance low-complexity TCM-4CPM (Trellis coded modulation and 4 continuous-phase modulation. The method includes: receiving data information, performing Trellis encoding, differential precoding, continuous-phase encoding, phase shaping filtering and phase modulating to obtain TCM-4CPM baseband signals for transmission; and subjecting the received TCM-4CPM baseband signals to digital phase discrimination, timing synchronization, differential sign demodulation and soft-decision decoding to obtain the data information. Efficient and reliable information transmission in channels with limited power and band is achieved, and simplification of TCM-4CPM technology is also achieved.

Description

technical field [0001] The present invention relates to a wireless communication technology combining coding and modulation, in particular to a high-performance and low-complexity TCM-4CPM (Trellis Coded Modulation-4Continuous Phase Modulation, trellis coded modulation combined with quaternary continuous phase modulation technology) ) design method and system. Background technique [0002] Nowadays, in the field of digital communication, in order to ensure the effectiveness and reliability of transmitted information, the main factors people consider are frequency band utilization and power utilization. However, to ensure the frequency band utilization and power utilization of transmitted information in practical applications It's hard to do both. [0003] For example, in a power-constrained channel, error correction codes are often used to increase information controllable redundancy to increase transmission bandwidth to obtain error correction capabilities, thereby reducin...

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Application Information

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IPC IPC(8): H04L1/00H04L25/02H04L27/20H04L27/233
Inventor 吴志林
Owner SICHUAN JIUZHOU ELECTRIC GROUP
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