Application of Turbo codes in optical OFDM multimode fiber communication system

Xie, Weixin; Hu, Guijun; Deng, Quan

doi:10.1016/j.optcom.2007.10.084

Cited by 15 publications

(5 citation statements)

References 8 publications

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“…Furthermore, the PCCC were adjusted to consist of only the first type of convolutional encoder. The design of Parallel Turbo codes [12] contained two ( Figure 2) [13] or more [9] convolutional encoders in parallel. In every design, one of them received the data stream straight from the random generator, while the others accepted an interleaved version of the primary generated data.…”

Section: Turbo Codes-description and Operationmentioning

confidence: 99%

Turbo Coded OFDM with Large Number of Subcarriers

Chronopoulos¹,

Tatsis²,

Kostarakis³

2012

JSIP

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Wireless communication systems have greatly advanced during the last years. A significant contributor in these systems’ performance has been Orthogonal Frequency Division Multiplexing (OFDM). Since its invention, it is considered to be a technological leap. This leap in splitting an information stream in multiple frequency carriers has been adapted by various scientists working on the development of wireless systems. Moreover, as OFDM presented excellent tolerance of channel fading and noise signals, the evolvement in terms of speed and reliability was consequent, because only a small stream of information is lost due to noise effects. OFDM along with the knowledge that Turbo codes is another excellent scheme of reducing BER, has triggered us to expand our research. So, we experimented in simulation level not only in joining OFDM with Turbo Codes but even in finding a better Turbo scheme compared to a typical PCCC, SCCC and a Convolutional encoder with Viterbi decoder. As the last goal has already been accomplished, in this paper is presented the new OFDM system consisted of our Turbo scheme. The analysis of the previous system took into consideration the effects of an AWGN channel. Also, this noise analysis was conducted using a simulation platform with specific attributes such as transmitting and receiving fixed number of subcarriers (2048 carriers after IFFT block) while using different types of convolutional concatenated codes, such as PCCC (Parallel), SCCC (Serial) and the new PCCC scheme. The results clearly show not only the improvement in the BER performance of the Turbo Coded OFDM systems (compared to others consisted of Viterbi decoders) but the overall superiority of the proposed design

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Section: Turbo Codes-description and Operationmentioning

confidence: 99%

Turbo Coded OFDM with Large Number of Subcarriers

Chronopoulos¹,

Tatsis²,

Kostarakis³

2012

JSIP

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“…Several researchers have discussed various efficient implementation algorithms for turbo codes 11–16 . Also, the researchers have implemented and demonstrated the turbo codes on various applications such as 3G & 4G systems, Bluetooth, and fiber communication systems 17–22 . Al‐Dweik and Sharif 11 have proposed a decoding algorithm to improve the performance, namely, bit error rate (BER) of the hard‐input hard‐output turbo product codes.…”

Section: Introductionmentioning

confidence: 99%

“…[11][12][13][14][15][16] Also, the researchers have implemented and demonstrated the turbo codes on various applications such as 3G & 4G systems, Bluetooth, and fiber communication systems. [17][18][19][20][21][22] Al-Dweik and Sharif 11 have proposed a decoding algorithm to improve the performance, namely, bit error rate (BER) of the hard-input hard-output turbo product codes. Also, the authors have concluded that the proposed hard-input hard-output has lesser computational complexity than the softinput soft-output decoders.…”

mentioning

confidence: 99%

Design of high‐speed data transfer turbo code for body channel communication transceivers

Vijayalakshmi

Alagumariappan

Sankaran

et al. 2023

Int J Communication

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In this work, a digital differential transmitter based on low-power wireless compensation transceiver for body channel communication (BCC) is proposed.Further, the proposed transceiver is composed of Touch Status Detection Unit (TSDU), Wireless Status Compensation Unit (WSCU), and a reconfigurable preamplifier. Initially, the human body channel environment for wireless communication is investigated based on properties from 1 to 100 MHz. Further, the turbo code-based encoding scheme is used to encode the data before transferring the data on the transmitter side. Also, the proposed error-correcting parallel turbo decoder using a modified step-by-step algorithm is presented.The turbo code-based decoding scheme is used to recover the error-free transmitted data at the receiver side. Results demonstrate that the proposed BCC transceiver is designed using 90 nm CMOS technology and it is observed that the proposed BCC transceiver has utilized an area of 600mm 2 . Also, the maximum data rate achieved by a proposed BCC transceiver was 100 Mbps, and the overall transceiver power consumption is 0.42 mW, and energy for communication is 0.02 nj/b.

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“…However, the use of MMF is confined to very short links due to modal bandwidth limit imposed by bandwidth-distance product. To overcame this limitation, the authors in [11] employ the Optical Frequency Multiplication (OFM) technique to transmit RF up to 40 GHz over MMF, and the authors in [12] have turbo code to transmit 50 GHz over MMF over 300 m of fiber. In our work, we propose the OCS modulation with Low Density Parity Check (LDPC) codes to transmit 60 GHz over MMF.…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of 60-GHz-WPAN System Distributed Over Multi-Mode Fiber

Yahyaoui¹,

Moussati²,

Haddadi³

2017

International Journal of Electronics and Telecommunications

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The manuscript deals with the assessment of Radio over Fiber (RoF) system including pure electrical baseband, pure radio frequency band centered around 60 GHz, and hybrid radio-optical system at the same RF band using a global simulation. In this work we focus on RoF solution to improve the low coverage of the 60 GHz channel caused by high free-space attenuation. A realistic co-simulation of the Wireless Personal Area Network (WPAN) IEEE802.15.3c-RoF was performed in a residential environment for Line-Of-Sight (LOS) and Non-Line- Of-Sight (NLOS). In this work, we demonstrated a 60 GHz radio on Multi-Mode Fiber (MMF) using Optical Carrier Suppression (OCS) modulation. The BER (Bit Error Ratio) performance of this system is measured by varying the following parameters: optical launched power, fiber length, modulation format, Channel coding and Signal to Noise Ratio. We show that the RoF at 60 GHz can reach a minimum of 300 m of MMF without optical amplifiers followed by a 5 m wireless transmission with BER less than 10-3 in the LOS and NLOS environments.

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Application of Turbo codes in optical OFDM multimode fiber communication system

Cited by 15 publications

References 8 publications

Turbo Coded OFDM with Large Number of Subcarriers

Turbo Coded OFDM with Large Number of Subcarriers

Design of high‐speed data transfer turbo code for body channel communication transceivers

Performance Evaluation of 60-GHz-WPAN System Distributed Over Multi-Mode Fiber

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