Real Time Coherent Transceiver Based on 12-Bits 24 Dimensions Golay Coded Modulation

Zeng, Tao; Meng, Lingheng; Li, Jie; Luo, Ming; Li, Xiang; Huang, Liyan

doi:10.1109/ecoc.2018.8535368

Cited by 4 publications

(5 citation statements)

References 8 publications

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“…Furthermore, a parallel version of IML is suggested in [29], showing an remarkably low latency of 5 clock cycles and a 10% boost in throughput with the same performance as the IMLD decoder. Additionally, a real-time implementation of Tx/Rx DSP based on extended Golay coded modulation for a coherent transceiver is reported in [30].…”

Section: A Golay Encoded Modulationmentioning

confidence: 99%

Enhanced Performance of Intensity Modulation With Direct Detection Using Golay Encoded Nyquist Pulses and Electronic Dispersion Compensation

Barakat,

Falou,

Gürkan

et al. 2024

IEEE Photonics J.

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The performance of intensity modulation (IM) with direct detection (DD) transmission systems is enhanced through a novel combination of multidimensional coding, Nyquist pulse shaping, and electronic dispersion compensation (EDC) at the transmitter using a finite impulse response (FIR) filter. A 24dimensional (24D) extended Golay binary code effectively transforms each incoming 12-bit message into a 24-bit codeword, achieving a coding efficiency of 0.5 bits per symbol for a 56 Gb/s on-off keying (OOK) transmission over 80 km of single mode fiber. While this encoding process introduces a 50% overhead, the required bandwidth is maintained at 56 GHz through doubling the symbol rate and the application of Nyquist pulse shaping with a raised cosine (RC) profile and a roll-off factor of zero, resulting in a flat power spectral density. This flat distribution contrasts with standard OOK transmission at 56 Gb/s with a roll-off factor of 1.0, where signal power is predominantly concentrated in the lower frequency range. One of the key advantages of the 24D Golay code is its substantial error correction capability. However, the benefits of this multidimensional coding and Nyquist pulse shaping extend beyond error correction. It is shown that, while both the proposed and standard OOK methods exhibit comparable performance in a white Gaussian noise channel at back-to-back, they differ significantly under frequency selective power fading conditions caused by the interplay of chromatic dispersion (CD) and direct detection. The misalignment between the frequency notches introduced by the FIR pre-EDC and those inherent in the channel response, especially severe at lower frequencies, favors transmission schemes with a flat power spectral density, like the 24D Golay-coded Nyquist pulses.

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Section: A Golay Encoded Modulationmentioning

confidence: 99%

Enhanced Performance of Intensity Modulation With Direct Detection Using Golay Encoded Nyquist Pulses and Electronic Dispersion Compensation

Barakat,

Falou,

Gürkan

et al. 2024

IEEE Photonics J.

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“…In the following step, the new Vds are calculated, and then the selection procedure is completed. It replaces Vd with a new, randomly picked Vd using Eq (7). It is then determined if the Vd generated is fit for purpose or not.…”

Section: A Golay Encoder Using Ebch/binary Golay Encoder/decodermentioning

confidence: 99%

“…Instead of using the other current methods, Golay codes are the most effective way for transmitting messages across underwater systems. The binary Golay code (23,12,7) is also known as a QR code or a linear cyclic code. The quadratic residue set for the binary Golay code over finite field GF (211) is given by Q23 = I | I j 2 mod 23 for 1 j 22 = 1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18.…”

Section: Reed-solomon Codesmentioning

confidence: 99%

“…In the realm of field programmable gate arrays, these reviews have advantages. The authors in (T. Zeng, et al, 2018) [7] presented the implementation of the TX/RX DSP in real-time according to the extended-Golay-coded modulation for the coherent transceiver. The sensitivity has been improved by about 2.9dB when compared with the PDM-BPSK at the specified bit rate.…”

mentioning

confidence: 99%

“…A few examples are the syndrome decoding of the extended binary Golay code [24,12,8] and the weight of a code word, as well as error correction and error detection. In (M. Wavare, et al, 2020) [20], when one knows its generating matrix [43,7], the major goal is to examine the encoding process of binary Schubert code [43, 7] using MATLAB. Studying syndrome decoding as well as error correction and identification is feasible with MATLAB.…”

mentioning

confidence: 99%

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An Efficient Technique to Implement Encoder and Decoder in Communication System for Error Detection and Correction Golay CodeUsing Golay code

DHANAVATH¹,

2022

Preprint

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Channel noise, crosstalk, and other annoyances can occur. Detecting and fixing anomalies in received data is essential to retrieve the sender's data. The Cyclic Redundancy Check (CRC) is used extensively in data transfer. The Golay binary cyclic codes are the most well-known (an alphabet consisting of two letters). The Extended Bose, Ray–Chaudhuri, and Hocquenghem (EBCH) codes and the binary Golay code are important because they are 3-error-correcting codes. The RS/BCH encoder converts input symbols into an n-symbol code word. Demodulate the QAM with a code phrase. The QAM mode is required to translate data symbols into signal waveforms. Raymond fading sends this altered signal. Artificial sounds and other disturbances may cause data loss on this Rayleigh channel. A demodulator separates the data from the carrier signal prior to decoding. It is fed into the receiver's decoder so that the original information may be recovered. The encoder and decoder employ the Golay coding strategy with CRC methodology to improve security while reducing circuit complexity. In order to alter encoders and decoders, the GOLAY binary coding mechanism must be used. The proposed system is designed to save electricity, reduce delay time, and speed up the encoding and decoding processes.

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An efficient architecture implementation of a golay code encoder in CMOS 45nm technology

Kumar,

Naik

2024

AIP Conference Proceedings

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Real Time Coherent Transceiver Based on 12-Bits 24 Dimensions Golay Coded Modulation

Cited by 4 publications

References 8 publications

Enhanced Performance of Intensity Modulation With Direct Detection Using Golay Encoded Nyquist Pulses and Electronic Dispersion Compensation

Enhanced Performance of Intensity Modulation With Direct Detection Using Golay Encoded Nyquist Pulses and Electronic Dispersion Compensation

An Efficient Technique to Implement Encoder and Decoder in Communication System for Error Detection and Correction Golay CodeUsing Golay code

An efficient architecture implementation of a golay code encoder in CMOS 45nm technology

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