A BIPCM Scheme Based on OCT Precoding for a 256-QAM OFDM-VLC System

Wu, Kaiquan; He, Jing; Ma, Jie; Wei, Yiran

doi:10.1109/lpt.2018.2870114

Cited by 12 publications

(6 citation statements)

References 10 publications

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“…In order to achieve ultra-high data transmission rate, high-order modulation schemes will be used in this wireless system [28] [29].The simulations of polar coded OFDM systems over Nakagami-m fading channel ( = 2) with 256QAM are carried out here, and the results are shown in Fig. 6.…”

Section: Data Analysis and Discussionmentioning

confidence: 99%

Polar Code Design for Nakagami-m Channel

2020

KSII TIIS

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One drawback of polar codes is that they are not universal, that is, to achieve optimal performance, different polar codes are required for different kinds of channel. This paper proposes a polar code construction scheme for Nakagami-m fading channel. The scheme fully considers the characteristics of Nakagami-m fading channel, and uses the optimized Bhattacharyya parameter bounds. The constructed code is applied to an orthogonal frequency division multiplexing (OFDM) system over Nakagami-m fading channel to prove the performance of polar code. Simulation result shows the proposed codes can get excellent bit error rate (BER) performance with successive cancellation list (SCL) decoding. For example, the designed polar code with cyclic redundancy check (CRC) aided SCL (= 8) decoding achieves 1.1dB of gain over LDPC at average BER about 10-5 under 4-quadrature amplitude modulation (4QAM) while the code length is 1024, rate is 0.5.

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Section: Data Analysis and Discussionmentioning

confidence: 99%

Polar Code Design for Nakagami-m Channel

2020

KSII TIIS

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“…Conventional BIPCM uses an interleaver to improve the decoding performance. As shown in [6], the interleaver is unnecessary if the code construction takes the mapped bit-level difference into account. In our design, the MC method is applied in the code construction, which not only considers the mapped bit-level difference but also frequency selective fading on OFDM subcarriers.…”

Section: Bit-interleaved Polar-coded Modulationmentioning

confidence: 99%

“…In our design, the MC method is applied in the code construction, which not only considers the mapped bit-level difference but also frequency selective fading on OFDM subcarriers. Thus, the orthogonal circulant matrix transform (OCT) used to overcome frequency selective fading in [6] is also unnecessary. MC method generates random information bits to calculate coded symbols repeatedly and transmit them over the ILC system.…”

Section: Bit-interleaved Polar-coded Modulationmentioning

confidence: 99%

“…Due to their numerous advantages, such as their explicit encoding and decoding structures and their good error-correction performance with low-complexity decoding algorithms, polar codes were adopted in the 5G standard. Some previous works have applied polar codes to VLC [6], [7] and proved its superiority over LDPC codes at short and moderate code lengths using cyclic redundancy check (CRC) aided successive cancellation list (CA-SCL) decoding [8]. Short code lengths are generally favored by latency-constrained short-reach OWC systems for their low decoding latency [8].…”

Section: Introductionmentioning

confidence: 99%

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Experimental Demonstration of 9.6 Gbit/s Polar Coded Infrared Light Communication System

Zheng

Chen

et al. 2020

IEEE Photon. Technol. Lett.

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“…Hong et al propose that the OCT-enabled FDS-precoding method shows a better BER/SNR performance than discrete the Fourier transform (DFT)-enabled FDS-precoding method in the VLC communication system to combat the effect of frequency-selective fading. To further improve the system capacity, [23]we proposed a 256 QAM OFDM modulation scheme coded with bit interleaved polar based on OCT precoding. M. Chen et al in [24] had fully studied the comparison of different precoding methods from the Peakto-Average Power Ratio (PAPR), tolerance of nonlinear distortion, computational complexity and BER performance, and so on and showed that the FDS-precoding method based on the complex valued OCT had a high computational complexity.…”

Section: Introductionmentioning

confidence: 99%

The Improved Precoding Method in the VLC-Based Intelligent Transportation System

Cheng

Zhou

et al. 2022

Journal of Advanced Transportation

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Visible light communication (VLC) transmission system, combined with lighting and communication, has a great application value in the field of intelligent transportation. To efficiently improve the performance of VLC-based intelligent transportation system, an improved precoding scheme is proposed and experimentally verified. Partial data-carrying subcarrier (PDS)-precoding scheme can balance the signal-to-noise ratio (SNR) and combat frequency selective fading (FSF) in the VLC-based intelligent transportation system. For ∼3.52 Gb/s DMT-VLC system with 1.9-m free space transmission, the OCT-based PDS-precoding signal shows almost the same BER performance as full data-carrying subcarriers precoding ones. Compared with the conventional scheme, the BER is reduced from 2e-3 to 8.14e-5 by using the proposed PDS-precoding. PDS-precoding is a nice choice to degrade the unbalanced damage for data-carrying subcarriers (SCs) in the bandwidth-limited VLC-based intelligent transportation system.

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A BIPCM Scheme Based on OCT Precoding for a 256-QAM OFDM-VLC System

Cited by 12 publications

References 10 publications

Polar Code Design for Nakagami-m Channel

Polar Code Design for Nakagami-m Channel

Experimental Demonstration of 9.6 Gbit/s Polar Coded Infrared Light Communication System

The Improved Precoding Method in the VLC-Based Intelligent Transportation System

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