17375831. SYSTEM AND METHOD FOR INTERFERENCE CANCELLATION IN OPTICAL TRANSMISSION simplified abstract (HUAWEI TECHNOLOGIES CO., LTD.)
SYSTEM AND METHOD FOR INTERFERENCE CANCELLATION IN OPTICAL TRANSMISSION
Organization Name
Inventor(s)
Mrinmoy Jana of Mississauga (CA)
Lutz Hans-Joachim Lampe of Vancouver (CA)
SYSTEM AND METHOD FOR INTERFERENCE CANCELLATION IN OPTICAL TRANSMISSION - A simplified explanation of the abstract
This abstract first appeared for US patent application 17375831 titled 'SYSTEM AND METHOD FOR INTERFERENCE CANCELLATION IN OPTICAL TRANSMISSION
Simplified Explanation
The patent application describes methods and systems for low complexity interference cancellation in multichannel optical transmission. It introduces a process of local or self-iteration between a propagation decision feedback equalizer and a soft demapper, followed by a soft decision forward error correction decoder to determine bit log-likelihood ratios. These ratios are then fed back to the equalizer and demapper for further self-iteration. Global iteration involving the decoder can also be performed before decoding the bitstream.
- Local or self-iteration is performed between a propagation decision feedback equalizer and a soft demapper.
- Soft decision forward error correction decoder determines bit log-likelihood ratios.
- Bit log-likelihood ratios are fed back to the equalizer and demapper for further self-iteration.
- Global iteration involving the decoder can be performed before decoding the bitstream.
Potential Applications
This technology can be applied in various fields where multichannel optical transmission is used, such as:
- Telecommunications industry for high-speed data transmission.
- Data centers for efficient and reliable communication between servers.
- Fiber optic networks for improved signal quality and capacity.
Problems Solved
The technology addresses the following problems in multichannel optical transmission:
- Interference and noise in the transmission that can degrade signal quality.
- Complexity of interference cancellation methods, which can limit their practical implementation.
- Error propagation in the decoding process, leading to incorrect data interpretation.
Benefits
The technology offers several benefits in multichannel optical transmission:
- Improved signal quality and reliability by canceling interference and reducing noise.
- Low complexity implementation, making it feasible for practical use.
- Enhanced decoding accuracy through self-iteration and feedback mechanisms.
Original Abstract Submitted
Methods and systems for low complexity interference cancellation in multichannel optical transmission. Local or self-iteration is performed one or more times between an expected propagation decision feedback equalizer and a soft demapper. Following local iteration, a soft decision forward error correction decoder determines bit log-likelihood ratios, which are fed back to the expected propagation decision feedback equalizer and soft demapper for further self-iteration. Global iteration involving the decoder can also be performed one or more times before a bitstream is decoded.
