Results 61 to 70 of about 1,441 (173)

On the efficiency of PAPR reduction schemes deployed for DRM systems [PDF]

, 2016
Digital Radio Mondiale (DRM) is the universally, openly standardized digital broadcasting system for all frequencies including LW, MW, and SW as well as VHF bands.
Fuhrwerk, Martin, Le, Chung, Moghaddamnia, Sanam, Peissig, Jürgen, Waal, Albert   +4 more
core   +1 more source

Simple Compression Algorithm for Memoryless Laplacian Source Based on the Optimal Companding Technique [PDF]

Informatica, 2009
This paper has two achievements. The first aim of this paper is optimization of the lossy compression coder realized as companding quantizer with optimal compression law. This optimization is achieved by optimizing maximal amplitude for that optimal companding quantizer for Laplacian source.
Zoran H. Peric, Marko D. Petkovic, Milan R. Dincic   +2 more
openaire   +2 more sources

Improving bit error rate in optical wireless OFDM systems through hybrid companding and precoding strategies

EURASIP Journal on Wireless Communications and Networking
Visible light communication (VLC) is a promising wireless high-data-rate transmission technology that uses visible light. Optical Orthogonal Frequency Division Multiplexing (OOFDM)-based systems, especially asymmetrically clipped optical OFDM (ACO-OFDM),
Amal Yasser, Albashir A. Youssef, Mohamed Abaza   +2 more
doaj   +1 more source

Improved scheme of asymmetrically clipped optical-orthogonal frequency division multiplexing (ACO-OFDM) for wireless IM/DD optical systems

Results in Engineering
Visible light communication (VLC) systems that employ optical orthogonal frequency division multiplexing (O-OFDM) face a critical challenge in the form of a high peak-to-average power ratio (PAPR), which limits transmission efficiency and system ...
Mohamed M. Elnabawy, Ehab K I Hamad, Yasser A. Zenhom, Ahmed Z A Zaki, Haytham Gamal, Alaa Rabie, M.B. Badawi, Shuja Ansari, Mahmoud A. Shawky   +8 more
doaj   +1 more source

Optical OTFS waveform PAPR analysis for high order modulation employing CNN, DNN, and AE machine learning algorithms under a variety of channel scenarios

Physics Open
Optical orthogonal time–frequency space (OTFS) modulation is a future technique for optical wireless communication with high mobility. Nevertheless, the high peak-to-average power ratio (PAPR) of OTFS modulation severely degrades the system performance ...
Arun Kumar, Nishant Gaur, Aziz Nanthaamornphong   +2 more
doaj   +1 more source

C Implementation & comparison of companding & silence audio compression techniques

CoRR, 2010
International Journal of Computer Science Issues online at http://ijcsi.org/articles/C-Implementation-comparison-of-companding-silence-audio-compression-techniques ...
Kruti Dangarwala, Jigar Shah
openaire   +2 more sources

Delta-modulation for the transmission of image data Final report [PDF]

Delta modulation for image data ...
Ehrman, L., Gish, H.
core   +1 more source

Efficient Digital Signal Processing Techniques and Architectures for On-Board Processors [PDF]

, 2016
In this paper, we present a number of algorithmic and architectural DSP solutions to be incorporated in digital OBPs for communication satellites to boost the system performance primarily in terms of reducing their power consumption.
Angeletti, P., Angeletti, P., Brown, S., Brown, S., Coskun, A., Coskun, A., Hughes, R., Hughes, R., Kale, I., Kale, I., Morling, R.C.S., Morling, R.C.S.   +11 more
core  

Reducing peak-to-average power ratio of filtered non-orthogonal multiple access and new radio 5g waveforms using hybrid partial transmit sequence-companding technique

ETRI Journal
For fifth-generation (5G) and beyond 5G communications, filtered nonortho-gonal multiple access (F-NOMA) can be used as a waveform contender. Filtering-based waveform frameworks provide suppression of out-of-band emission (OOBE) and asynchronous ...
Arun Kumar, Karthikeyan Rajagopal, Nishant Gaur, Aziz Nanthaamornphong   +3 more
doaj   +1 more source

A Novel Low-Complexity Peak-Power-Assisted Data-Aided Channel Estimation Scheme for MIMO-OFDM Wireless Systems

IEEE Open Journal of Signal Processing
Low-complexity channel estimation techniques are key to enabling efficient, reliable, and real-time communication in modern wireless devices operating under resource and energy constraints.
Inaamullah Khan, Mohammad Mahmudul Hasan, Michael Cheffena   +2 more
doaj   +1 more source