phase cancellation
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A Wideband 2.4-GHz Delta-Sigma Fractional-N PLL With 1-Mb/s In-Loop Modulation
White Paper A phase noise cancellation technique and a charge pump linearization technique, both of which are insensitive to component errors, are presented and demonstrated as enabling components in a wideband CMOS delta-sigma fractional-N phase-locked loop... [03 Jul 2008]
Optimum Power Control for Successive Interference Cancellation With Imperfect Channel Estimation
White Paper 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... [03 Jul 2008]
Frequency-Hopping Versus Interference Cancellation for TD-CDMA
White Paper The work discussed in this paper considers asynchronous Time Division Code Division Multiple Access (TD-CDMA) systems with Rake receivers and one stage of Parallel Interference Cancellation (PIC) or Serial Interference Cancellation (SIC). [03 Jul 2008]
I/Q Mismatch Cancellation for MIMO-OFDM Systems
White Paper This paper presents a mathematical analysis of the effects of I/Q gain, delay and phase mismatches in MIMO-OFDM systems. MIMO-OFDM systems are gaining prominence in high data rate applications due to their increased spectral efficiency. [03 Jul 2008]
An Active Interference Canceller for Multistandard Collocated Radio
White Paper A prototype of the solution has been implemented on an FR-4 board, which consists of an emulation filter to model the coupling channel; and amplitude, delay and phase alignment of the cancellation signal. [21 Mar 2006]
Novel Combinatorial Constructions of Optical Orthogonal Codes for Incoherent Optical CDMA Systems
White Paper A novel balanced SAC receiver for multiuser interference cancellation that can handle unequal in-phase cross correlation of OOC is also proposed. Three novel classes of Optical Orthogonal Codes (OOCs) based on combinatorial designs are proposed. [12 Jan 2006]
Amplitude and Phase Estimation Considerations for Asynchronous CDMA With Successive Interference Cancellation
White Paper Successive interference cancellation, in conjunction with very low rate convolutional codes, has been shown to approach the Shannon capacity of a Gaussian channel. However, accurate phase and amplitude estimation is required for effective operation. [13 Oct 2005]
OFDM Phase Noise Cancellation Via Approximate Probabilistic Inference
This paper proposes a systematic probabilistic framework to address the phase noise (PHN) problem in OFDM. In addition to deriving the optimal data detection scheme in the presence of PHN, the paper introduces a series of suboptimal approaches to... [30 Mar 2005]
Effects of Phase Noise on Performance of OFDM Systems Using an ICI Cancellation Scheme
White Paper 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... [26 Oct 2004]
Blind Frequency Offset Estimation for Overlap PCC-OFDM Systems in Presence of Phase Noise
White Paper This paper presents a technique for frequency offset estimation for polynomial cancellation coded orthogonal frequency division multiplexing with symbols overlapped in the time domain (overlap PCC-OFDM) in the presence of phase noise. [26 Oct 2004]
Bank ditches $5bn IBM deal and brings IT back in-house
News In the short-term the cancellation of the deal will benefit IBM's accounts as the IT services outfit was still in the heavy investment stage of the contract. The cancellation of the JP Morgan Chase deal could stem the tide of future banking... [16 Sep 2004]
Sun kills upcoming chips
News On the other hand, the cancellation underscores the difficulties Sun has been facing in the difficult world of chipmaking. The UltraSparc V, which was based on a different design than the UltraSparc IV, would have required Sun and its customers to... [13 Apr 2004]
The Bloor Perspective: LinuxWorld shenanigans, Psion trouble and what value stock options
Comment The break up of this venture has been blamed on reorganisation within Motorola that has brought about the cancellation of many other projects. Linux has a place in business, but it is still in the adolescent phase of growth. [05 Feb 2001]
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