Wireless HD Video Packetization With Shortened Last Codeword
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Solution Overview
Problem
Current wireless technologies lack the capability to transmit uncompressed high definition video signals efficiently over wireless channels, leading to interference and reduced picture quality due to compression and decompression processes, as well as insufficient bandwidth to handle the required 1 Gbps transmission needs.
Innovation Solution
A method and system for processing high definition video data that involves receiving information packets, outer encoding, shortening the last codeword, and adding dummy bits to meet predefined size requirements for interleavers, ensuring efficient transmission over wireless mediums by optimizing packetization and error protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If compression and decompression processes are used to reduce transmission bandwidth requirements, then transmission bandwidth is reduced, but picture quality deteriorates and data loss occurs
Solution Approach 1:
The information packet is segmented into multiple codewords (M×n codewords) using an interleaver structure, where M is the depth and n is the number of interleavers. This segmentation allows the data to be organized into manageable units that can be processed efficiently over wireless channels while maintaining the ability to reconstruct the original high-definition video data without compression loss.
2Device complexity
If conventional wireless transmission approaches are used, then implementation is simple, but interference issues occur and uncompressed HD video transmission is not capable
Solution Approach 1:
Outer encoding is performed on the M×n codewords before transmission to add error protection capability. This preliminary encoding step prepares the data to withstand potential interference and channel errors, ensuring reliable transmission of uncompressed HD video over wireless channels without requiring complex retransmission protocols.
Solution Approach 2:
The last codeword is shortened to accommodate variable packet lengths while maintaining the integrity of the interleaver structure. This local modification allows the system to handle different data sizes efficiently without compromising the overall error protection and transmission reliability of the complete packet.
3Manufacturing precision
If uncompressed HD video signals are transmitted over wireless channels, then picture quality is maintained, but transmission bandwidth requirements increase to 1 Gbps
Solution Approach 1:
Dummy bits are added to the outer encoded data to meet the predefined size requirements for the outer interleaver. This parameter adjustment ensures that the transmitted data structure aligns with the wireless channel requirements while maintaining the ability to transmit uncompressed HD video quality, effectively bridging the gap between data integrity and transmission efficiency.
Data Source
AI summary
A method and system for processing high definition video data to be transmitted over a wireless medium is disclosed. In one embodiment, the method includes receiving an information packet having the length of L bytes, wherein L=(M×n×K)+A, and where: M is the depth of an interleaver, n is the number of interleavers, K is an encoding code length and A is the number of remainder bytes with respect to M×n×K bytes, wherein the remainder bytes are located at the end of the information packet. M×n×K bytes represent M×n codewords, wherein the remainder bytes sequentially form a plurality of remainder codewords, and wherein the plurality of remainder codewords comprise a last codeword which is located at the end of the remainder codewords. The method further includes i) shortening the last codeword such that the resultant shortened codeword is shorter in length than each of the remaining codewords of the information packet and ii) adding dummy bits to the outer encoded data so as to meet a predefined size requirement for an outer interleaver.