Colored Codeword Modulation for 5G Reliability and Complexity
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Solution Overview
Problem
Conventional communication systems face limitations in achieving high data rates, low latency, and low bit error rates in noisy environments due to complex channel coding methods and high implementation complexities, particularly in 5G networks, where current codes have long code lengths and require high computational resources.
Innovation Solution
The proposed solution involves using colored codeword modulation and sequence modulation techniques, where input bits select codewords from a mapping table, allowing for orthogonal codewords to be transmitted and decoded with reduced complexity, enabling efficient data transmission and reception through repetition and antenna diversity methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional channel coding methods are used in 5G networks, then reliability is improved, but device complexity increases due to long code lengths and high computational resources required
Solution Approach 1:
The patent segments the codeword transmission into multiple parts transmitted through different antennas. Each antenna transmits a segment of the codeword, which can be independently received and processed. This segmentation reduces the computational burden at the receiver while maintaining the reliability benefits of diversity transmission.
Solution Approach 2:
The patent pre-encodes the data into codewords using a simplified encoding scheme before transmission. The encoding is performed in advance with reduced complexity, and the pre-encoded codewords are then transmitted through multiple antennas. This preliminary encoding action reduces the computational resources needed during real-time transmission and reception.
2Reliability
If repetition coding is used for long range communications, then reliability is improved, but productivity decreases due to multiple transmissions of the same bit
Solution Approach 1:
The patent transitions from temporal repetition (sending the same bit multiple times over time) to spatial diversity (sending different segments of codewords through multiple antennas simultaneously). This dimensional change from time to space allows the system to achieve reliability through spatial distribution rather than temporal repetition, thereby improving data transmission rate while maintaining reliability.
3Reliability
If colored coding is used to obtain reliable information, then reliability is improved, but device complexity increases due to complex SISO decoding requirements
Solution Approach 1:
The patent extracts the essential reliability function from complex SISO decoding by using simplified codeword segmentation and transmission. Instead of relying on complex iterative decoding algorithms, the system extracts reliability through spatial diversity and orthogonal codeword design, removing the need for complex decoding operations at the receiver.
4Productivity
If higher order M-ary quadrature amplitude modulation symbols are used, then productivity is improved, but reliability decreases because repetition coding is not sustainable
Solution Approach 1:
The patent changes the fundamental parameter from using higher-order modulation symbols to using orthogonal codewords with binary phase shift keying. This parameter change allows repetition coding to be sustainable across multiple antennas while maintaining high data rates. The orthogonality of codewords ensures that repeated transmissions can be reliably distinguished and combined, achieving both high productivity and reliability.
Data Source
AI summary
The invention discloses a method of conveying information from a sender to a receiver by use of various codeword patterns given in a mapping table and detection through decoding via the reverse mapping process. The codeword patterns may be selected as combinations of bits, frequencies, ports, or other elements as desired. Associated systems for carrying out the described encoding methods are also provided. The various methods may be applicable in low transmit power, energy-saving, secure, low latency, storage and in military, mobile, optical, deep space and fixed telecommunication systems for long range transmission and reliable information.