Proceedings ArticleDOI
Low Complexity OFDM Modulator and Demodulator Based on Discrete Hartley Transform
Zakaria Sembiring,Mohd Fareq Abd Malek,Hasliza A. Rahim +2 more
- pp 252-256
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TLDR
In this paper, a discrete Hartley transform (DHT) was used as an alternative to replace the conventional complex valued and mature discrete Fourier transform (DFT) as OFDM modulator and demodulator.Abstract:
The investigation on discrete Hartley transform (DHT) as an alternative to replace the conventional complex valued and mature discrete Fourier transform (DFT) as OFDM modulator and demodulator was carried out in this research. The random binary data was generated and transmitted via the dispersive channel with using additive white Gaussian noise(AWGN) channel model. The performance of the system was evaluated by calculating the number of bit errors for several value of signal to noise ratio (SNR). The measurements of parameters were repeated five times to obtain and to calculate the accuracy of the new system. The plotted graph of average BER verses SNR showed that the BER was decreased with the increasing of given value SNR. The analysis of system performance was also evaluated for several numbers of sub carriers used and the results showcased some advantages. The modification of DHT algorithm is expected to reduce the complexity and time consuming for long-length of computational on the performing of OFDM modulator and demodulator based on DHT.read more
Citations
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OFDM for Optical Communications
TL;DR: This paper gives a tutorial overview of OFDM highlighting the aspects that are likely to be important in optical applications and the constraints imposed by single mode optical fiber, multimode optical fiber and optical wireless.
Journal ArticleDOI
GA-PTS Using Novel Mapping Scheme for PAPR Reduction of OFDM Signals Without SI
Alok Joshi,Davinder S. Saini +1 more
TL;DR: Simulations are presented to show that proposed GA-PTS system provides similar PAPR performance as conventional PTS but without need of SI transmission at reduced number of searches.
Peak-to-Average Power Ratio Reduction of OFDM signals Using Improved PTS Scheme with Low Computational Complexity
Alok Joshi,Davinder S. Saini +1 more
TL;DR: In this article, a partial transmit sequence (PTS) scheme is proposed to reduce the computation complexity by tremendous margin and at the same time maintaining same peak to average power ratio reduction as conventional PTS scheme.
Book ChapterDOI
UWB Antenna with Artificial Magnetic Conductor (AMC) for 5G Applications
Syuhaimi Kassim,Hasliza A. Rahim,Mohamedfareq Abdulmalek,R. B. Ahmad,Mohd Haizal Jamaluddin,Muzammil Jusoh,D. A. Mohsin,N. Z. Yahya,F. H. Wee,Ismahayati Adam,K. N. A. Rani +10 more
TL;DR: A slotted Y-shaped antenna design with coplanar waveguide (CPW) using a Rogers material (RO4350B) as a substrate and the bandwidth improvement by 15.6% with the AMC as a metasurface and the frequency, gain, directivity and antenna efficiency before and after optimization are analyzed.
Journal ArticleDOI
Design and Simulation of Hartley based Multi Orthogonal Band OFDM
TL;DR: A MultiOrthogonal-Band MOB-OFDM system based on the Discrete Hartley Transform (DHT) is proposed to improve the BER performance and shows the gain in SNR achieved by the proposed system.
References
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Journal ArticleDOI
Data Transmission by Frequency-Division Multiplexing Using the Discrete Fourier Transform
Stephen B. Weinstein,P. Ebert +1 more
TL;DR: The Fourier transform data communication system is described and the effects of linear channel distortion are investigated and a differential phase modulation scheme is presented that obviates any equalization.
Journal ArticleDOI
OFDM for Optical Communications
TL;DR: In this paper, the authors give a tutorial overview of OFDM and highlight the aspects that are likely to be important in optical applications, and discuss the constraints imposed by single mode optical fiber, multimode optical fiber and optical wireless.
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Multicarrier techniques for 4G mobile communications
Shinsuke Hara,Ramjee Prasad +1 more
TL;DR: In this article, the authors provide a comprehensive introduction to multicarrier techniques for 4G mobile communications with a special focus on the analytical aspects, explaining radio channel characteristics and phenomena and discussing the advantages and disadvantages of the OFDM scheme; featuring new multic-rier-related techniques, MC-CDMA, research on several 4G systems, and a look at several problems to be overcome with these systems.
Book
OFDM for Optical Communications
William Shieh,Ivan B. Djordjevic +1 more
TL;DR: In this paper, the authors present a comprehensive overview of optical OFDM signal processing, with a distinctive focus on its broad range of applications, including free-space communications, optical access networks, and metro and log haul transports.
Journal ArticleDOI
A More Symmetrical Fourier Analysis Applied to Transmission Problems
TL;DR: In this article, the Fourier identity is expressed in a more symmetrical form which leads to certain analogies between the function of the original variable and its transform, and it permits a function of time to be analyzed into two independent sets of sinusoidal components, one of which is represented in terms of positive frequencies, and the other of negative.
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