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Robust mobile signal framing modulation method for multimedia broadcast single frequency network

A technology for multimedia broadcasting and mobile signals, which is used in multi-frequency code systems, multi-carrier systems, phase-modulated carrier systems, etc.

Inactive Publication Date: 2014-04-30
NINGBO UNIV
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  • Claims
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Problems solved by technology

[0016] Aiming at the wireless problem of multi-service digital TV multimedia broadcasting single frequency network with controllable data rate of high-level interleaved coding modulation, the present invention proposes a robust mobile signal framing modulation method for multimedia broadcasting single frequency network

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  • Robust mobile signal framing modulation method for multimedia broadcast single frequency network
  • Robust mobile signal framing modulation method for multimedia broadcast single frequency network

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Embodiment Construction

[0033] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0034] According to the embodiment of the transmitter of the multimedia broadcast single frequency network robust mobile signal framing modulation method proposed by the present invention, as figure 1 shown, follow these steps:

[0035] 1) The network data manager of the single frequency network forms an FFT concatenated interleaved coded modulation data block in the frequency domain after the input data bit stream undergoes BCH coding, bit interleaving, LDPC coding, symbol modulation and symbol rotation, and symbol interleaving , BCH means Bose Chaudhuri Hocquenghem, LDPC means Low Density Parity Check, the length of FFT concatenated interleaved coding modulation data block is K, and the value of K is an even number; the symbol modulation is one of QPSK, 16QAM, 64QAM and 256QAM; The element rotation is realized by rotating the symbol constel...

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Abstract

The invention discloses a robust mobile signal framing modulation method for a multimedia broadcast single frequency network, and relates to a mixed framing modulation scheme of the space domain, the time domain and the frequency domain. According to the training sequence optimization design, the signal generating scheme and the signal selecting method of the robust mobile signal framing modulation method for the multimedia broadcast single frequency network, OFDM signals can be processed and recovered at a receiver end easily to obtain original signals of the OFDM signals. The robust mobile signal framing modulation method for the multimedia broadcast single frequency network has the advantages of being low in peak-to-average power ratio, short in synchronization time, resistant to channel fading, multiple in controllable service and the like.

Description

technical field [0001] The invention belongs to the field of wireless communication, and more specifically relates to a method for framing and modulating a robust mobile signal of a multimedia broadcasting single frequency network. Background technique [0002] Digital TV multimedia broadcasting single frequency network wireless transmission system, as an important part of digital TV wireless multimedia broadcasting, the development of its related technologies is closely related to people's quality of life, and therefore has received extensive attention from people. Digital TV wireless multimedia broadcasting related technologies and related industries are industries with rapid development and good market prospects in the field of communication and computer. In terms of technologies related to digital TV wireless multimedia broadcasting, countries are currently focusing on how to provide low-cost, reliable and high-speed mobile solutions for digital TV wireless multimedia br...

Claims

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Application Information

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IPC IPC(8): H04L5/00H04L27/36H04L27/26H04L27/20
Inventor 郑紫微刘哲何晨晖熊欧吴明昊潘洋
Owner NINGBO UNIV
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