An Effective Error Correction Scheme for Arithmetic Coding

Lin, Qiuzhen; Wong, Kwok-Wo; Li, Ming

doi:10.1155/2015/861093

Cited by 4 publications

(1 citation statement)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Occasionally, the F-OFDM in the system produces high PAPR, which degrades the efficiency of the power amplifier in the transmitter. Filtering is a straightforward way to suppress Out-of-Band (OOB) emissions by applying a digital filter with prespecified frequency response [11]. Since, F-OFDM considering Inverse Fast Fourier Transform (IFFT) and cyclic prefix (CP), it is said that the signal imposes a size of channel to protect from overlapping [12].…”

Section: Introductionmentioning

confidence: 99%

Reduction of PAPR for STFBC MIMO F-OFDM using Enhancement Asymmetric Arithmetic Coding Scheme

Noorazlina Mohamid Salih,

Azlina Idris,

Siti Maisurah Sulong

et al. 2023

ARASET

View full text Add to dashboard Cite

The advancement of mobile communications has rapidly expanded in recent years, with the invention of transmitting and receiving system technology. The use of multiple antennas, also known as Multiple-Input Multiple-Output (MIMO) technology, is a key feature in modern wireless communication systems such as 5G. MIMO utilizes multiple antennas at both the transmitter and receiver to improve the system's performance in terms of data rate, link reliability, and spectral efficiency. In this paper, a block coding technique, was deployed to enhance the reliability of data transmission and introducing redundancy and error correction capabilities. These techniques involve encoding data into blocks and adding redundancy bits, which allow the receiver to detect and correct errors that may occur during transmission. The encoding technique, called the Asymmetric Arithmetic Coder (AAC), and it is supported in 5G system to provide high speed signal transmission in multiple users’ environment. For retrieving a smooth signal at the receiver, a filter was introduced to improve its efficiency of the wireless link. However, the existing filter in the system, caused the increasing of the peak-to-average-power-ratio (PAPR) at the transmitter system. Thus, the block coding technique was implemented to increase the efficiency and reduced the power ratio. The most common block coding technique for wireless communication is AAC technique. The AAC technique was founded to reduce the power ratio and further improve the signal diversity. Recently, for the application of 5G, the AAC was enhanced by adding the number of symbol and improved the PAPR. It is called the Enhancement Asymmetric Arithmetic Coding (EAAC) technique. The EAAC contributes to the lower value of the PAPR. With the use of EAAC as the block coding technique, the transmitter is said to support the system and thus improved the PAPR measurements by 5.5%. Lastly, the reduction of PAPR contributes to minimize the distortion and enhanced spectral efficiency for wireless communication system.

show abstract

Section: Introductionmentioning

confidence: 99%

Reduction of PAPR for STFBC MIMO F-OFDM using Enhancement Asymmetric Arithmetic Coding Scheme

Noorazlina Mohamid Salih,

Azlina Idris,

Siti Maisurah Sulong

et al. 2023

ARASET

View full text Add to dashboard Cite

show abstract

Quarter‐wavelength printed quadrifilar helical antenna design for UHF RFID handheld reader applications

Chiu

Wang

2018

Micro & Optical Tech Letters

View full text Add to dashboard Cite

This article presents a compact size and light weight PQHA for handheld UHF RFID reader applications. Quarter‐wavelength inverted‐F resonators are employed as the basic radiation elements for the four arms of the QHA. The height of the designed reader antenna is only 27 mm so that it features compact size but still preserves satisfactory electrical performance. The antenna is fed by a four‐port quadrature phase feeding system fabricated by only lumped elements. The feeding system printed on a FR4 substrate measures only 60 × 60 × 1.6 mm3. The measured fractional bandwidth of the proposed PQHA system is about 21% and the 3‐dB axial ratio bandwidth ranging from 800 to 1000 MHz covers the whole UHF RFID band. The measured maximum gain is around 3.2 dBic in the North American band and the 3‐dB beamwidth is about 120° at 920 MHz. The measured reading distance along line of sight is approximately 7.2 m using a commercial 4W EIRP reader and a standard tag. The advantages of the antenna are easy implementation, light weight and low cost, making it suitable for handheld UHF RFID reader applications.

show abstract

CFD analysis of artificial slippage and surface texturing in lubricated sliding contact considering cavitation

Pratomo¹,

Romadhon²,

Muchammad³

et al. 2017

AIP Conference Proceedings

View full text Add to dashboard Cite

The effect the effectiveness of the liquid suction heat exchanger to performance of cold storage with refrigerant R22, R404A and R290/R600a AIP Conference Proceedings 1788, 030067 (2017) Abstract. The present paper explores the effect of slip variation for Newtonian and non-Newtonian lubricants on textured slider bearing performance considering cavitation. Investigations are carried out by using a numerical method based on commercial CFD (computational fluid dynamic) software ANSYS for fluid flow phenomenon to assess the tribological characteristic (i.e. hydrodynamic pressure distribution) of a lubricated sliding contact. The Zwart-Gerber-Belamri model for cavitation is adopted. To model hydrophobicity, i.e. slippage, the enhanced user-defined-function (UDF) in the FLUENT® package is developed. The numerical results show that the cavitation modeling has a huge effect on the performance. Neglecting the cavitation leads to a less accurate result. Also, regarding the effect of slip variation, it is found that the single slip is the best pattern to improve the pressure profile.

show abstract

An Effective Error Correction Scheme for Arithmetic Coding

Cited by 4 publications

References 31 publications

Reduction of PAPR for STFBC MIMO F-OFDM using Enhancement Asymmetric Arithmetic Coding Scheme

Reduction of PAPR for STFBC MIMO F-OFDM using Enhancement Asymmetric Arithmetic Coding Scheme

Quarter‐wavelength printed quadrifilar helical antenna design for UHF RFID handheld reader applications

CFD analysis of artificial slippage and surface texturing in lubricated sliding contact considering cavitation

Contact Info

Product

Resources

About