Block transmissions on orthogonal carriers

Download

index.pdf

Date

2005

Author

Yazıcı, Ayhan

Metadata

Show full item record

Item Usage Stats

248
views

126
downloads

Orthogonal Frequency Division Multiplexing (OFDM) and Single Carrier Block Transmissions (SCBT) are located at the two opposite edges of block transmission concept. In this thesis a system which lies between OFDM and SCBT is proposed. The new system, namely Block Transmissions on Orthogonal Carriers (BTOC), can be considered as a hybrid form of OFDM and SCBT. BTOC system is investigated under the redundant filterbank precoders and equalizers framework. Peak to average power ratio (PAPR) of BTOC is formulated and compared with the PAPRs of OFDM and SCBT. Effect of frequency offset for BTOC is investigated and comparison between OFDM, SCBT, and BTOC is presented. Simulation results of Zero Padded OFDM (ZP-OFDM), SCBT, and BTOC are included.

Subject Keywords

Telecommunication.

URI

http://etd.lib.metu.edu.tr/upload/12606516/index.pdf
https://hdl.handle.net/11511/15414

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Block Transmissions on Orthogonal Carriers Yazici, Ayhan; Baykal, Buyurman (2006-09-28) Orthogonal Frequency Division Multiplexing (OFDM) and Single Carrier Block Transmissions (SCBT) are located at the two opposite edges of block transmission concept. In this paper a system which lies between OFDM and SCBT is proposed. The new system, namely Block Transmissions on Orthogonal Carriers (BTOC), can be considered as a hybrid form of OFDM and SCBT. BTOC system is investigated under the redundant filterbank precoders and equalizers framework. Peak-to-average power ratio (PAPR) of BTOC is formulated...
Mutual coupling calibration of antenna arrays for direction-of-arrival estimation Aksoy, Taylan; Tuncer, Temel Engin; Department of Electrical and Electronics Engineering (2012) An antenna array is an indispensable portion of a direction-of-arrival (DOA) estimation operation. A number of error sources in the arrays degrade the DOA estimation accuracy. Mutual coupling effect is one of the main error sources and should be corrected for any antenna array. In this thesis, a system theoretic approach is presented for mutual coupling characterization of antenna arrays. In this approach, the idea is to model the mutual coupling effect through a simple linear transformation between the mea...
Interception techniques for direct sequence spread spectrum signals Karadeniz, Uygar; Baykal, Buyurman; Department of Electrical and Electronics Engineering (2005) In this work interception and spreading sequence estimation of Direct Sequence Spread Spectrum (DSSS) signals, in low signal to noise power ratios is discussed. For interception an approach based on autocorrelation fluctuations is employed and also symbol period is estimated from this interception process. Spreading sequence estimation is performed by using eigenanalysis of the correlation matrix and estimated symbol period. These approaches are applied on different kinds of DSSS signals including 3rd gener...
Noncoherent differential demodulation of CPM signals with joint frequency offset and symbol timing estimation Çulha, Onur; Tanık, Yalçın; Department of Electrical and Electronics Engineering (2011) In this thesis, noncoherent differential demodulation of CPM signals with joint carrier frequency offset and symbol timing estimation is investigated. CPM is very attractive for wireless communications owing to major properties: good spectral efficiency and a constant envelope property. In order to demodulate the received CPM signal differentially, the symbol timing and the carrier frequency offset have to be estimated accurately. There are numerous methods developed for the purpose. However, we have not en...
Target detection by the ambiguity function technique and the conventional fourier transform technique in frequency coded continuous wave radars Akangöl, Mehmet; Sayan, Gönül; Department of Electrical and Electronics Engineering (2005) Continuous Wave (CW) radars are preferred for their low probability of intercept by the other receivers. Frequency modulation techniques, the linear frequency modulation (LFM) technique in particular, are commonly used in CW radars to resolve the range and the radial velocity of the detected targets. The conventional method for target detection in a linear FMCW radar makes use of a mixer followed by a low-pass filter whose output is Fourier transformed to get the range and velocity information. In this thes...

Citation Formats

A. Yazıcı, “Block transmissions on orthogonal carriers,” M.S. - Master of Science, Middle East Technical University, 2005.