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Capacity Gains Of Single Antenna Interference Cancellation In GSM
White Papers Single Antenna Interference Cancellation (SAIC) is a very interesting and promising technology currently being standardized in 3GPP as part of GERAN Release 6. This interference reduction technique takes advantage of the latest developments in...
[January 1, 1970, 0:59]
Effects Of Phase Noise On Performance Of OFDM Systems Using An ICI Cancellation Scheme
White Papers This paper investigates the effects of phase noise on the performance of Orthogonal Frequency Division Multiplexing (OFDM) systems using an Intercarrier Interference (ICI) cancellation scheme. It is shown that the ICI cancellation scheme can...
[January 1, 1970, 0:59]
Inter-Carrier Interference Cancellation For OFDM Systems
White Papers This paper investigates three methods for combating the effects of ICI - ICI self-cancellation (SC), maximum likelihood (ML) estimation, and extended Kalman filter (EKF) method. Orthogonal Frequency Division Multiplexing (OFDM) is an emerging multi...
[January 1, 1970, 0:59]
Transmission Capacity Of Wireless Ad Hoc Networks With Successive Interference Cancellation
White Papers This paper studies the improvement in transmission capacity obtainable with successive interference cancellation (SIC), an important receiver technique that has been shown to achieve the capacity of several classes of multiuser channels, but has...
[January 1, 1970, 0:59]
Investigation Of Several Types Of Nonlinearities For Use In Stereo Acoustic Echo Cancellation
White Papers This paper investigates several types of nonlinearities used for the unique identification of receiving room impulse responses in stereo acoustic echo cancellation. The effectiveness is quantified by the mutual coherence of the transformed signals.
[January 1, 1970, 0:59]
Adaptive Joint Interference Cancellation And Space-Time Block Decoding For IEEE 802.11b WLAN Systems
White Papers In this paper, receivers with Joint Interference Cancellation and time reversal Space-Time block Decoding (JICSTD) are proposed for an enhanced version of the IEEE 802.11b WLAN standard with space-time coded transmission.
[January 1, 1970, 0:59]
Optimum Power Control For Successive Interference Cancellation With Imperfect Channel Estimation
White Papers Successive interference cancellation, in conjunction with orthogonal convolutional codes, has been shown to approach the Shannon capacity for an additive white Gaussian noise channel. However, this requires highly accurate estimates for the...
[January 1, 1970, 0:59]
Noise Cancellation
Downloads GritTec's Noise cancellation (NC) technology of single-microphone solution is used for reducing the external hindrances and background noises in speech signal. NC can be used as for the selection of speech signal, so and for the selection of...
[June 3, 2008, 18:01]
Ultra Low-Power Sub-Band Acoustic Echo Cancellation For Wireless Headsets
White Papers To address this problem, an oversampled sub-band adaptive acoustic echo cancellation system is proposed and implemented on an ultra-low resource DSP system. The echo cancellation algorithm is integrated with two voice activity detectors and double...
[January 1, 1970, 0:59]
The Impact Of Fading On The Performance Of Large CDMA With Parallel Interference Cancellation
White Papers In this paper, the large-system performance of a multistage first-order linear Partial Parallel Interference Cancellation (PPIC) receiver for a synchronous Direct-Sequence Code Division Multiple Access (DS-CDMA) system over a frequency-flat fading...
[January 1, 1970, 0:59]
Geolocation In Ad Hoc Networks Using DS-CDMA And Generalized Successive Interference Cancellation
White Papers Round-trip Travel Time (RTT) and Angle-Of-Arrival (AOA) measurements are obtained using the generalized successive interference cancellation/matching pursuits (GSIC/MP) algorithm. Channel estimation and distributed positioning algorithms are...
[January 1, 1970, 0:59]
A Telecom Operator's Guide For Selecting Echo Cancellation Equipment
White Papers Procedures for performing electrical (hybrid) and acoustic echo cancellation evaluation, conducting subjective testing, assessing feature performance, and validating product compliance (environmental, standards, maintenance, reliability, etc.are...
[January 1, 1970, 0:59]
Frequency-Domain Interference Cancellation For MIMO-OFDM Systems
White Papers This paper proposes a new interference cancellation scheme for multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) systems in the presence of intersymbol interference (ISI).
[January 1, 1970, 0:59]
Iterative Space-Time Interference Cancellation For W-CDMA Systems
White Papers Iterative multiuser interference cancellation schemes for Direct Sequence Code Division Multiple Access systems exhibit good performance results for a reasonable complexity. This paper studies an efficient iterative scheme, combining interference...
[January 1, 1970, 0:59]
A Simple Iterative Power Control Scheme For Successive Interference Cancellation
White Papers Successive Interference Cancellation (SIC) is a technique, which has the potential to increase the capacity of DS-CDMA systems substantially. One of the major criticisms of the technique is that it requires a specific distribution of unequal...
[January 1, 1970, 0:59]
Amplitude And Phase Estimation Considerations For Asynchronous CDMA With Successive Interference Cancellation
White Papers Successive interference cancellation, in conjunction with very low rate convolutional codes, has been shown to approach the Shannon capacity of a Gaussian channel. This approach to CDMA is very well suited to asynchronous (uplink) wireless channels.
[January 1, 1970, 0:59]
Space-Time Interference Cancellation In MIMO-OFDM Systems
White Papers In this paper, a two stage hybrid interference cancellation and equalization framework is proposed for interference cancellation in the uplink of Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) systems.
[January 1, 1970, 0:59]
The Advantages Of Stand-Alone Echo Cancellation Systems In Telecommunications Networks
White Papers There are frequent debates over whether it is best to implement the echo cancellation function as an independent stand-alone element, or as a feature that is an integral part of a network switch or voice operated coder (vocoder) system.
[January 1, 1970, 0:59]
Users Annoyed By HP Server Cancellation
News HP's cancellation of the 3000 line will likely result in a bigger, if more protracted, increase in business than the Y2K issue, Murphy said. Added Horner, "I don't think we can get a reversal," convincing HP to overturn its cancellation decision...
[November 15, 2001, 14:18]
Transmission Capacity Of CDMA Ad Hoc Networks Employing Successive Interference Cancellation
White Papers Successive interference cancellation (SIC) is attractive for DS-CDMA ad hoc networks since the dominant nearby interferers can be cancelled. In this paper, upper and lower bounds on the transmission capacity of direct-sequence CDMA wireless ad hoc...
[January 1, 1970, 0:59]
