Performance of signal detection with trellis code for downlink non-orthogonal multiple access visible light communication

Astharini, Dwi; Asvial, Muhamad; Gunawan, Dadang

doi:10.1007/s11107-021-00957-5

Cited by 4 publications

(5 citation statements)

References 40 publications

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“…The evaluation of TCM scheme's performance is typically quantified by measuring the coding gain attained in comparison to an uncoded signal. The coding gain serves as a metric to evaluate the extent of system performance improvement offered by TCM, highlighting its capability to mitigate channel noise and enhance communication reliability [5][6][7][8].…”

Section: Fig 1 Reduction In Distance Post Expansion Of Signal Pointsmentioning

confidence: 99%

“…𝑆 ̂𝑙≠𝑆 𝑙 𝑆 𝑙 ∞ 𝑙=1 (8) In the above equation, 𝑃(𝑆 𝑙 ) signifies A Priori Probability of transmitting symbol 𝑆 𝑙 . 𝑃 2 (𝑆 𝑙 , 𝑆 ̂𝑙) which can be substituted in the equation at high SNRs using equation (6), and consequently, the upper bound with regards to a Rician fading channel can be expressed as:…”

Section: Fig 5 Error Event Considering Length As Lmentioning

confidence: 99%

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Rate 5/6 TCM Code Having 64 States with 64 QAM for Fading Channel

Goswami,

Nambari,

Kandula

et al. 2024

IJEER

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Trellis Coded Modulation (TCM) is powerful technique employed in digital communication systems to improve the reliability and efficiency of data transmission. TCM combines error control coding and modulation schemes to achieve superior performance in challenging channel conditions. In TCM, information bits are encoded using a trellis encoder, which generates a sequence of encoded symbols. These symbols are then mapped onto a modulation scheme, such as Quadrature Amplitude Modulation (QAM) or Phase Shift Keying (PSK), to create the modulated signal. At the receiver, the received signal is demodulated and decoded using a trellis decoder, which employs maximum likelihood decoding to recover the original information bits. The trellis structure allows for efficient error correction and makes TCM particularly suitable for channels with fading, noise, and other impairments. TCM has been widely used in various communication standards and applications to enhance data transmission reliability and spectral efficiency. TCM is a coding technique that merges coding and modulation to attain substantial coding gain without compromising bandwidth efficiency. The emergence of TCM occurred in the late 1970s, and ever since, it has found extensive utilization in various contemporary information transmission systems. In this paper, a new methodology is introduced for the design of a 64-state rate 5/6 TCM code optimized for fading channels. The outcomes obtained from the study are remarkably encouraging, demonstrating coding gain of around 10 dB in comparison to uncoded 32 PSK. This substantial gain plays a pivotal role in boosting data rates, especially in situations where bandwidth-limited channels are involved.

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Section: Fig 1 Reduction In Distance Post Expansion Of Signal Pointsmentioning

confidence: 99%

Section: Fig 5 Error Event Considering Length As Lmentioning

confidence: 99%

Rate 5/6 TCM Code Having 64 States with 64 QAM for Fading Channel

Goswami,

Nambari,

Kandula

et al. 2024

IJEER

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“…The second feature is the utilization of convolutional coding to introduce a certain authenticity between consecutive signal points. Therefore, only certain patterns or sequences of signal points are allowed (7) . TCM comprises an encoding function of https://www.indjst.org/ rate T = K s / K s + 1 and an M-ary display that directs M = 2 K s input massages to a large constellation of M = 2 K s +1 point locations.…”

Section: Trellis Coded Modulationmentioning

confidence: 99%

“…The performance of the coded MIMO system using a source of bit stream with high-priority, medium-priority, and low-priority classes is investigated and analyzed in (6) . The principal objective of (7) is to study the implementation of multilevel amplitude modulation forced by trellis coding in downlink non-orthogonal multiple-access channels for visible light (VLC) communications. The main purpose of (8) is to describe the channel testing process to minimize the issues associated with the higher values embedded in the transmitted signals.…”

Section: Introductionmentioning

confidence: 99%

Application of a Trellis Coded Modulation to Ameliorate the 5G Communication for Tropical Regions

Patra¹,

Mitra²

2023

IJST

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Objectives: To minimize the bit error rate and enhance the radio signal power by an application of the Trellis Coded Modulation (TCM) for the Fifth Generation (5G) technology in tropical regions. Methods: Various diversity techniques have been adopted to diminish the Bit Error Rate. A Communication link model has been proposed in this work and an STBC MIMO system (Space-Time Block Coding multiple-input multiple-output) has been applied to enhance the diversity gain and coding gain of the proposed model. The said model has been implemented in this work for tropical regions for increasing the radio signal power. Findings: The basic climatic feature of tropical regions is a heavy amount of rainfall throughout the year. Because of such rainfall, the radio signal power in these regions gets diminished, and the Bit Error Rate (BER) increases. By applying the proposed communication link model in the tropical regions the Bit Error Rate has been reduced. The values of the Bit Error Rate of the proposed model have been obtained for Rayleigh distribution, Rician distribution and various MIMO techniques. Novelty: A hardware cosimulation block and a 4x4 STBC MIMO has been developed with its subsequent verification on Xilinx Kintex-7 FPGA board.

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“…Linear KF showed good performance with a standard deviation estimation error of 0.0219. Researchers (Astharini, Asvial, Gunawan, 2022b) evaluate the performance of a trellis-coded modulation (TCM) technique for NOMA VLC systems with two different convolutional encoders and decoders: four-state and eightstate. Using a four-state trellis-coded, the system is compared to an on-off keying (OOK) system with maximum likelihood signal detection (MLSD).…”

Section: Introductionmentioning

confidence: 99%

High-Bit-Rate Transmission in Visible Light Communication System Based on Adaptive Successive Interference Cancellation Technique

Pamukti¹,

Wijayanto²,

Liaw³

2023

IJTech

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In this study, we proposed an adaptive successive interference cancellation (SIC) technique to enhance non-orthogonal multiple access visible light communication (NOMA-VLC) and demonstrate its effectiveness using extensive simulations. NOMA-VLC is a promising technology for high-speed wireless communication, but interference from multiple users can pose a significant challenge. SIC is a technique that can help mitigate this interference. We used non-return to zero (NRZ) modulation to achieve high bit rates up to 2 Gbps and evaluated the performance using bit error rate (BER) analysis. Our simulation showed that the static power allocation (SPA) performance on the NOMA-VLC system achieved a BER value of around 10 -3 for both users, using power allocation α1=0.7 and α2=0.3. We also compared SPA against gain ratio power allocation (GRPA) and found that the performance of GRPA was not as good, with a BER value around 10 -2 . Our results show the effectiveness of the proposed SIC technique in enhancing the performance of NOMA-VLC.

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Performance of signal detection with trellis code for downlink non-orthogonal multiple access visible light communication

Cited by 4 publications

References 40 publications

Rate 5/6 TCM Code Having 64 States with 64 QAM for Fading Channel

Rate 5/6 TCM Code Having 64 States with 64 QAM for Fading Channel

Application of a Trellis Coded Modulation to Ameliorate the 5G Communication for Tropical Regions

High-Bit-Rate Transmission in Visible Light Communication System Based on Adaptive Successive Interference Cancellation Technique

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