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cmmb byte deinterleaving device and method

A deinterleaving and byte technology, applied in digital transmission system, electrical components, error prevention, etc., can solve the problem of increasing storage space of byte deinterleaver, save power consumption, improve error correction capability, and save area The effect of spending

Inactive Publication Date: 2017-10-31
SHANGHAI HUAHONG INTEGRATED CIRCUIT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the receiver wants to receive programs of multiple channels at the same time, the storage space occupied by the byte deinterleaver will also need to increase

Method used

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  • cmmb byte deinterleaving device and method
  • cmmb byte deinterleaving device and method
  • cmmb byte deinterleaving device and method

Examples

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Embodiment Construction

[0030] see figure 2 As shown, the input data of the byte deinterleaving device in the CMMB receiver comes from the LDPC decoder, and the input data is composed of byte data and written into the receiver's off-chip memory. The byte deinterleaving device buffers the output data, and then outputs it according to the data format required by the transmission. The byte deinterleaving device controls the RS decoder to decode.

[0031] to combine image 3 As shown, in one embodiment, the CMMB byte deinterleaving device includes: an input unit, a controller unit, an output unit and a memory interface control unit.

[0032] The input unit composes the bit stream data output by the LDPC decoder into bytes according to the bit order of the byte deinterleaving device.

[0033] The memory interface control unit receives the input byte of the input unit and sends it to the receiver off-chip memory; obtains data from the receiver off-chip memory and uses it for the RS decoder, and then de...

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Abstract

The invention discloses a CMMB byte deinterleaving device, comprising: an input unit, which composes the bit stream data output by an LDPC decoder into byte data according to the bit order of the byte interleaver; an output unit, which buffers the output data , and then output according to the data format required by the transmission; the memory interface control unit receives the byte data output by the input unit, sends it to the receiver off-chip memory, obtains the data from the receiver off-chip memory and uses it for the RS decoder, And write the decoding result of the RS decoder back to the off-chip memory of the receiver, obtain data from the off-chip memory of the receiver, and send the data to the output unit; the controller unit controls the input unit, the output unit and the memory interface The unit is controlled so that the whole byte deinterleaving process works normally. The invention also discloses a CMMB byte deinterleaving method. The invention can effectively save the area of ​​the CMMB receiver chip.

Description

technical field [0001] The invention relates to the field of CMMB (China Mobile Multimedia Broadcasting) wireless receivers in digital communication, in particular to a CMMB byte deinterleaving device. The invention also relates to a CMMB byte deinterleaving method. Background technique [0002] The China Mobile Multimedia Broadcasting (CMMB) standard is a Chinese mobile multimedia broadcasting industry standard promulgated by the State Administration of Radio, Film and Television of China in October 2006. The standard came into effect on November 1, 2006. The CMMB standard fully considers the characteristics of mobile multimedia broadcasting services, and adopts the most advanced channel error correction coding and Orthogonal Frequency Division Multiplexing (OFDM) modulation technology to improve the reception sensitivity of handheld devices, mobility and battery power. In order to improve the anti-interference ability and support for mobility, it adopts the most advanced ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00
Inventor 李刚
Owner SHANGHAI HUAHONG INTEGRATED CIRCUIT