Essays about: "Interference Cancellation"

Showing result 26 - 30 of 31 essays containing the words Interference Cancellation.

  1. 26. Performance Analysis of Adaptive Algorithms based on different parameters Implemented for Acoustic Echo Cancellation in Speech Signals

    University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Author : Swathi Kotte; [2011]
    Keywords : least mean square LMS Algorithm; Leaky Least mean square LLMS Algorithm; Normalized Least Mean Square NLMS Algorithm and Recursive Least Square RLS Algorithm ; additive white Gaussian noise ; Return Loss Enhancement ERLE ; signal to noise ratio;

    Abstract : Echo cancellation in voice communication is a process of removing the echo to improve the clarity, quality of the voice signals by suppressing the silence signal which prevents echoes during transmission through networks. There are two types of echo in voice communication: Hybrid echo cancellation and Acoustic echo cancellation. READ MORE

  3. 27. Applied Speech Enhancement in Mobile Communication Acoustics

    University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Author : Oscar Gala Moreno; Kamil Parlak; [2011]
    Keywords : Mobile Communications; Filtering; Wiener; Spectral Subtraction; Speech Enhancement; matlab; wdft; iwdft; Filter Bank; Subband;

    Abstract : This thesis presents two solutions to the problem of mobile communications degradation due to interfering background signals. The target lies in getting an estimation of the background noise signal that accompanies a phone conversation and remove it. READ MORE

  4. 28. OFDM Systems Offset Estimation and Cancellation Using UKF and EKF

    University essay from Institutionen för datavetenskap, fysik och matematik, DFM

    Author : Dinsefa Mustefa; Ermias Mebreku; [2011]
    Keywords : Orthogonal Frequency Devision Multiplexing; Inter carrier interference; Unscented Kalman filter; Extended Kalman filter; Frequency offset; Estimation; Compensation; OFDM; UKF; EKF; ICI; ISI;

    Abstract : Orthogonal Frequency Division Multiplexing (OFDM) is an efficient multi- carrier modulation scheme, which has been adopted for several wireless stan- dards. Systems employing this scheme at the physical layer are sensitive to frequency offsets and that causes Inter Carrier Interference (ICI) and degra- dation in overall system performance of OFDM systems. READ MORE

  5. 29. Behavior Modeling of a Digital Video Broadcasting System and the Evaluation of its Equalization Methods

    University essay from Datorteknik

    Author : Wang Jian; Xie Yan; [2010]
    Keywords : ATSC; Multipath; Channel Estimation; Channel Equalization; FEQ; Inter-Block Interference;

    Abstract : In this thesis, a single carrier ATSC DTV baseband transmitter, part of the receiver(including channel estimator and channel equalizer), were modeled. Since multi-pathinduced ISI (inter symbol interference) is the most significant impact on theperformance of single carrier DTV reception, modeling and implementation of singlecarrier channel estimator and channel equalizer have been the focus of the thesis. READ MORE

  6. 30. Interference Cancellation in a Full duplex System

    University essay from Lunds universitet/Institutionen för reglerteknik

    Author : Thomas Ahlström; Claes Bengtsson; [2008]
    Keywords : Technology and Engineering;

    Abstract : In a full duplex system as WCDMA a mobile phone transmits and receives at the same time, but at different frequencies. The transmitted signal will cause interference in the receiver which must be suppressed to not get degraded sensitivity in the receiver. READ MORE