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Showing 1 to 20 of 57 for “"Single-carrier"”.

  1. Channel Estimation in Single -Carrier and Multi-Carrier Communication Systems

    Song, SeongwookUniversity of Illinois at Urbana-Champaign2015

    … technology such as turbo receivers and multi-carrier communication systems, which have influenced recent standards, e.g., IEEE 802.11 and IEEE 802.16. Regardless of the communication systems, channel state information is required for reliable demodulation, and different structures pose …

    uiuc Repository record

  2. Single-carrier frequency domain equalization using subband decomposition for optical wireless communications

    Mu, Di

    … compared with radio frequency communications. Single-carrier frequency domain equalization (SCFDE) is a transmission scheme which has been considered as an alternative of orthogonal frequency-division multiplexing (OFDM), because it has most of the advantages of OFDM and avoids the problems of …

    njit Repository record

  3. The Bit Error Rate (BER) Performance in Multi-Carrier (OFDM) and Single-Carrier

    Albdran, Saleh M2001

    … subscribers' usage.</p> <p>The OFDM, as a multi-carrier, is more complex than the single-carrier transmission scheme. However, the OFDM technique maintains better performance for high data rate in terms of bit error rate (BER). In this thesis a comparison has been presented between the …

    denver Repository record

  4. Sum-rate optimal network beamforming and power allocation for single-carrier asynchronous bidirectional relay network

    Askari, MinaUniversity of Ontario Institute of Technology2015

    … total transmit power budget, for an asynchronous single-carrier bidirectional (two-way) network. The network consists of two single-antenna transceivers which wish to exchange information with the help of multiple single-antenna amplify-and-forward (AF) relays. We assume that the network is …

    uoit Repository record

  5. Advanced receivers for space-time block-coded single-carrier transmissions over frequency-selective fading channels

    Wavegedara, Kapila Chandika B.University of British Columbia2008

    … schemes are investigated and developed for single-carrier space-time (ST) block-coded transmissions over frequency-selective fading (FSF) channels. First, we develop an MMSE-based turbo equalization scheme for Alamouti ST block-coded systems. A semi-analytical method to estimate the bit …

    ubc Repository record

  6. Orthogonal space time coding for IM/DD optical wireless communication with single carrier frequency domain equalization

    Wu, Nan

    … (IM/DD) optical wireless communications with single carrier frequency domain equalization (SCFDE) by using Orthogonal Space Time Code (OSTC). More attention has been paid to three SCFDE schemes due to their outstanding performances in practical cases. It is demonstrated that OSTC can be …

    njit Repository record

  7. Design of single-carrier frequency domain equalization (SC-FDE) with transmit diversity for wireless and optical communications

    Acolatse, Kodzovi

    … sensitivity to frequency offset and phase noise. Single carrier with frequency domain equalization (SC-FDE) transmission utilizes single carrier modulation at the transmitter, and it performs frequency domain equalization at the receiver. SC-FDE is a technique in which, similar to OFDM, …

    njit Repository record

  8. Blind Channel Estimation and Multiuser Detection for Multi-Rate CDMA Communications

    Huang, LeiVictoria University2003

    … detection for multi-rate DS/CDMA, including single-carrier and multicarrier scenarios. For the single-carrier case, space-time blind linear multiuser detection is investigated for synchronous dual-rate systems over the AWGN channel. The performance is evaluated analytically. The multi-rate …

    vu-aus Repository record

  9. Asynchronous bi-directional relay-assisted communication networks

    Vahidnia, RezaUniversity of Ontario Institute of Technology2014

    … bi-directional relay network, consisting of two singleantenna transceivers and multiple single-antenna relays, where the transceiver-relay paths are subject to different relaying and/or propagation delays. Such a network can be viewed as a multipath channel which can cause …

    uoit Repository record

  10. Spectrum Awareness: Deep Learning and Isolation Forest Approaches for Open-set Identification of Signals

    Fredieu, ChristianVirginia Tech2022

    … a signal as either as a communication waveform (Single-Carrier (SC), Single-Carrier Frequency Division Multiple Access (SC-FDMA), Orthogonal Frequency Division Multiplexing (OFDM), Amplitude Modulation (AM), Frequency Modulation (FM)) or a radar waveform (Linear Frequency Modulation (LFM) or …

    vt Repository record

  11. Advanced classification of OFDM and MIMO signals with enhanced second order cyclostationarity detection

    Shi, Miao

    … classification to blindly distinguish OFDM from single carrier signals. We use the fourth order cumulants; an approach which in the past has been also applied to classify single carrier signals. A blind OFDM parameter estimation scheme was then followed, which includes the estimation of number of …

    njit Repository record

  12. Adaptive MMSE multiuser receivers in MIMO OFDM wireless communication systems

    Eneh, Titus IkechukwuUniversity of Greenwich2011

    … network capacity, there is a migration from Single Input Single Output (SISO) antenna technology to a more promising Multiple Input Multiple Output (MIMO) antenna technology. On the other hand, Orthogonal Frequency Division Multiplexing (OFDM) technique has emerged as a very popular …

    greenwich Repository record

  13. Advanced methods in automatic modulation classification for emerging technologies

    Li, Hong

    … combining (MRC) to increase the accuracy of both carrier frequency offset (CFO) estimation and likelihood function calculation in channel fading. In fact, double CFO estimations are executed in this classifier. With the first the unknown CFO, phase offsets and amplitudes are estimated as …

    njit Repository record

  14. Design and verification of SC-FDE/OFDM communication schemes for millimetre-wave wireless system using FPGA technologies

    Sobaihi, Hhaled2012

    … networks (WPANs) in the 60 GHz frequency band. Single-carrier and multicarrier transmission techniques are considered in the implementation of a 64.8 GHz WPAN capable of achieving a reliable indoor link. Thus, single-carrier with frequency domain equalization (SC-FDE) and orthogonal …

    southwales Repository record

  15. PAPR reduction in OFDM communications with generalized discrete Fourier transform

    Sayin, Sertac

    … (DFT) spread OFDM technology, also known as Single Carrier Frequency Division Multiple Access (SCFDMA), which has a lower PAPR value, is used for uplink channel. In this thesis, the PAPR of DFT spread OFDM was further decreased by using a GDFT concept. The performance improvements of GDFT …

    njit Repository record

  16. Shape Up: Peak -Power Reduction via Constellation Shaping

    Kwok, Henry K.University of Illinois at Urbana-Champaign2015

    … It also approaches the PAR characteristics of a single-carrier system (such as QAM or PAM) as the number of constellation points per channel increases. In addition, we present an O( N log2N) algorithm using a discrete Hadamard transform-based OFDM and introduce a method for incorporating …

    uiuc Repository record

  17. Photo-produced phonons in semiconductors

    Msall, Madeleine ElizabethUniversity of Illinois at Urbana-Champaign2011

    … as a byproduct of electronic excitation. A single carrier sheds this excess by the emission of optical phonons which cascade down in frequency, $\nu,$ by the normal anharmonic processes as they propagate in the crystal. This quasidiffusion of phonons is characterized by broad heat pulses at …

    uiuc Repository record

  18. Sistemas de transmissão multiportadora aplicados em um canal acústico submarino na presença de efeito doppler

    Andrade, Iandra GaldinoUniversidade Federal do Rio de Janeiro2017

    … of feasibility of the application of multicarrier transmission application in acoustic communication systems for underwater environment. Such analysis encompass (Single-Carrier Frequency Division Multiple Access) SC-FDMA, (Orthogonal Frequency Division Multiplexing) OFDM and (Frequency …

    brazil-uerj Repository record

  19. Code-division multiplexing

    Hoffmann, Ceilidh, 1969-Massachusetts Institute of Technology2004

    … the imposition of practical pulse shapes for carrier modulation, we show that multi-carrier format using cosine functions has higher bandwidth efficiency than the single-carrier format, even in an ideal Gaussian channel model. Each pulse is shaped via a prototype baseband filter such that when …

    mit Repository record

  20. Orthogonal Generalized Frequency Division Multiplexing (OGFDM)

    Kadhum, MohammadUniversity of Northampton2020

    … the interference between adjacent frequency subcarriers, and gaining a flexible bit loading scheme. Since the key downsides of the 4G waveform (CP-OFDM), several alternative transmission waveforms have been investigated for improving transmission techniques of the upcoming communication networks …

    northampton Repository record

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