Ara
Toplam kayıt 11, listelenen: 1-10
New criteria for the existence of stable equilibrium points in nonsymmetric cellular neural networks
(2003)
This paper presents new criteria for the existence of stable equilibrium points in the total saturation region for cellular neural networks (CNNs). It is shown that the results obtained can be used to derive some complete ...
Gezgin iletişim için uzay-zaman kodlamalı çok-taşıyıcılı tümleşik sistem tasarımı
(Tübitak, 2003-04)
Günümüzde önemi hızla artan gezgin ve telsiz (mobile/wireless) iletişim sistemleri (uydu iletişimi, gezgin radyo, “indoor” iletişim) iletişim kanalının neden olduğu toplamsal Gauss gürültüsüne ek olarak sönümlemeden (fading) ...
Üç boyutlu göz geometrisinin küme bölüntüleme ile verimli spektral kodlaması
(Tübitak, 2008-08)
3-B nesnelerin görselleştirilmesi uygulamalarında kullanılan tel filelerin ( gözlerin) geometrilerinin sıkıştırılması (DEERİNG, 1995)’deki ön görücü kodlamaya dayanan yöntem ile beraber rağbet gören bir araştırma alanı ...
Kablosuz iletişim ağlarında kullanıcı yardımlaşmasına dayalı protokollerin dizaynı, optimum kaynak tahsisi ve iletim stratejileri
(Tübitak, 2009-03-01)
Bu projede, çoklu erişim kanallarında kanala uyarlamalı özgün kullanıcı işbirliği stratejileri geliştirilmiştir. Literatürde yalnızca iki kullanıcı için ele alınan karşılıklı ve eşzamanlı işbirliği teknikleri, üç kullanıcılı ...
A new method to represent speech signals via predefined signature and envelope sequences
(Hindawi Publishing Corporation, 2007)
A novel systematic procedure referred to as "SYMPES" to model speech signals is introduced. The structure of SYMPES is based on the creation of the so-called predefined "signature S = {S(R)(n)} and envelope E = {E(K) (n)}" ...
Modeling of electrocardiogram signals using predefined signature and envelope vector sets
(Hindawi Publishing Corporation, 2007)
A novel method is proposed to model ECG signals by means of "predefined signature and envelope vector sets (PSEVS)." On a frame basis, an ECG signal is reconstructed by multiplying three model parameters, namely, predefined ...
Maximum likelihood blind channel estimation for space-time coding systems
(Hindawi Publishing Corporation, 2002-05)
Sophisticated signal processing techniques have to be developed for capacity enhancement of future wireless communication systems, In recent years, space-time coding is proposed to provide significant capacity gains over ...
Crossing minimization in weighted bipartite graphs
(Elsevier B.V., 2009-12)
Given a bipartite graph G = (L0, L1, E) and a fixed ordering of the nodes in L0, the problem of finding an ordering of the nodes in L1 that minimizes the number of crossings has received much attention in literature. The ...
Comment on "Encryption and decryption of images with chaotic map lattices" [Chaos 16, 033118 (2006)]
(American Institute of Physics Inc., 2008-09)
In this paper, we comment on the chaotic encryption algorithm proposed by A. N. Pisarchik et al. [Chaos 16, 033118 (2006)]. We demonstrate that the algorithm is not invertible. We suggest simple modifications that can ...
A low-complexity KL expansion-based channel estimator for OFDM systems
(Springer International Publishing, 2005-04-05)
This paper first proposes a computationally efficient, pilot-aided linear minimum mean square error (MMSE) batch channel estimation algorithm for OFDM systems in unknown wireless fading channels. The proposed approach ...