Code excited linear predictive coding of speech using source-filter interrelation extracted by self organising maps

Avkaroğulları, Gökhan


Code aided frame synchronization for frequency selective channels
Ekinci, Umut Utku; Tuncer, Temel Engin; Department of Electrical and Electronics Engineering (2010)
Frame synchronization is an important problem in digital communication systems. In frame synchronization, the main task is to find the frame start given the flow of the communication symbols. In this thesis, frame synchronization problem is investigated for both additive white Gaussian noise (AWGN) channels and frequency selective channels. Most of the previous works on frame synchronization consider the simple case of AWGN channels. The algorithms developed for this purpose fail in frequency selective chan...
Code-hopping as a new strategy to improve performance of S-CDMA cellular systems
Unal, B; Tanik, Y (1996-11-22)
An alternative coding strategy to the fixed spreading code assignment of code-division multiple-access (CDMA) systems, called code-hopping is proposed for the uplink path of synchronous CDMA (S-CDMA) systems. In code-hopping S-CDMA, mobile users swap their spreading codes according to a predetermined hopping pattern. In this way, mobile channels which are identified by the spreading codes are exchanged. Performance of code-hopping on the uplink path of S-CDMA systems is evaluated numerically on a typical S-...
Code matrix: A methodological way of presenting historical change of knowledge of pre-service mathematics teachers
Sevinç, Şerife (null; 2018-04-17)
This proposal is centered on a research investigating pre-service teachers’ (PSTs) knowledge needed to write realistic mathematics problems. Constructing a teacher knowledge theory is important for teacher education; yet, this proposal focuses on how “code matrix” in MAXQDA was utilized to present theoretical codes and discuss the historical change of them across modeling cycles. Code matrix presented five key aspects of the theoretical codes: (1) knowledge dimensions (KDs); (2) intersections of KDs, (3) kn...
Code-switching in EFL classrooms : a case study on discourse functions, switch types, initiation patterns, and perceptions
Horasan, Seçil; Seferoğlu, Gölge; Department of English Language Teaching (2013)
This case study aimed to investigate the amount of code-switching used by students and teachers in English as a Foreign Language (EFL) classrooms at the School of Languages at a state university in terms of switch types, initiation patterns, and the discourse functions of code-switching, as well as the perceptions of the participants. Four classrooms consisting of 92 students and 8 teachers took part in the study. 16 lessons in total were observed and video-recorded. The recordings were transcribed along wi...
CodePipe: An Opportunistic Feeding and Routing Protocol for Reliable Multicast with Pipelined Network Coding
Li, Peng; Guo, Song; Yu, Shui; Vasilakos, Athanasios V. (2012-03-30)
Multicast is an important mechanism in modern wireless networks and has attracted significant efforts to improve its performance with different metrics including throughput, delay, energy efficiency, etc. Traditionally, an ideal loss-free channel model is widely used to facilitate routing protocol design. However, the quality of wireless links would be affected or even jeopardized by many factors like collisions, fading or the noise of environment. In this paper, we propose a reliable multicast protocol, ca...
Citation Formats
G. Avkaroğulları, “Code excited linear predictive coding of speech using source-filter interrelation extracted by self organising maps,” Middle East Technical University, 1998.