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12.898  Articles
1 of 1.291 pages  |  10  records  |  more records»
This paper presents a lifting wavelet transform (LWT)-based blind audio watermarking scheme designed for tampering detection and self-recovery. Following 3-level LWT decomposition of a host audio, the coefficients in selected subbands are first partitione... see more

This paper presents a lifting wavelet transform (LWT)-based blind audio watermarking scheme designed for tampering detection and self-recovery. Following 3-level LWT decomposition of a host audio, the coefficients in selected subbands are first partitione... see more

This paper investigates an adaptive M-ary phaseshiftkeying (M-PSK) modulation scheme over Rayleigh flatfading channels. The data rate is adapted according to thechannel state. At the receiver, the fading is estimated using pilot symbols. To cancel the cha... see more

In millimeter-wave wireless cellular systems like Local Multipoint Distribution Services (LMDS) rain attenuation is an essential factor of performance degradation. It can cause signal outages and poor quality of signal reception. To mitigate the problem, ... see more

In this paper, we analyze a new cross layer combining scheme of adaptive modulation and coding (AMC) at the physical layer and hybrid automatic repeat request (HARQ) protocol at the data link layer. Our purpose is to improve the performance of the communi... see more

The method of automated modulation type recognition and determination of signal parameters by radiomonitoring facilities is offered in the article. The method establishes an procedure of application of the approaches to the definition of signal analytic r... see more

In this paper, authors presented a price maximization scheme for optimal orthogonal frequency division for multiple access (OFDMA) subcarrier allocation for wireless video unicast/multicast scenarios. They formulate a pricing based video utility function ... see more

Di era globalisasi saat ini lebih mudah untuk mengakses informasi melalui berbagai media. Sehingga banyak ditemukan kasus pelanggaran hak cipta. Penelitian ini menjadi salah satu solusi untuk mengatasi permasalahan tersebut yaitu dengan mengaplikasikan te... see more

Higher-order modulation schemes in optical communication systems that suffer from several impairments can use artificial intelligence (AI) algorithms, among other possible techniques, to mitigate these issues. In this paper, several techniques for optical... see more

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