Articles

July 25, 2019

A simultaneous transmit-receive quadrature balanced RF front-end with wideband digital self interference cancellation

This paper presents a quadrature balanced RF Front-End transceiver architecture and a digital self-interference cancellation (SIC) algorithm for simultaneous transmit-receive (Tx-Rx) in next generation half-duplex and full-duplex radios. Tx-Rx isolation of >57dB is measured for CW signals over 80MHz BW,...

By Nimrod Ginzberg, Dror Regev, Genadiy Tsodik, Shimi Shilo, Doron Ezri, Emanuel Cohen

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June 6, 2019

Transceiver Architectures for Full Duplex Systems with Unmatched Receiver

In this paper, we present an overview of both the challenges and the state-of-the-art in full duplex (FD) integrated transceivers in terms of loss and noise. New circuit concept is presented for mismatched receiver design with a cancelling path. An...

By Nimrod Ginzberg, Dror Regev, Emanuel Cohen

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May 22, 2019

Time-multiplexed parsing in marking-based network telemetry

Network telemetry is a key capability for managing the health and efficiency of a large-scale network. Alternate Marking Performance Measurement (AM-PM) is a recently introduced approach that accurately measures the packet loss and delay in a network using a small...

By Alon Riesenberg, Yonnie Kirzon, Michael Bunin, Elad Galili, Gidi Navon, Tal MizrahiAuthors

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March 28, 2019

A Quadrature Balanced Multi-Mode RF Front-End Architecture with Wideband Ultra Low Power Self Interference Cancellation

This paper presents a quadrature balanced RF Front-End architecture with a built-in primary isolation for a single antenna Full Duplex and Time Division Duplex wireless communications. Self-interference cancellation is implemented by injecting a digitally synthesized cancellation signal into a dedicated...

By Nimrod Ginzberg, Dror Regev, Genadiy Tsodik, Shimi Shilo, Doron Ezri, Emanuel Cohen

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July 2, 2018

Modified re-configurable quadrature balanced power amplifiers for half and full duplex RF front ends

An RF front-end (RFFE) architecture for dual-mode half and full duplex operation, employing a modified quadrature balanced power amplifier (QBPA), is proposed, where the receive channel is connected to the QBPA transmit isolated output.

By Dror Regev, Shimi Shilo, Doron Ezri, Gan Ming

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June 10, 2018

A Robust Reconfigurable Front-End for Non-contiguous Multi-Channel Carrier Aggregation Receivers

A new architecture for multi-channel carrier aggregation receivers is proposed for eliminating risks of VCO injection pulling and mitigating performance degradation resulting from Multi-Lomutual coupling. A fully integrated receiver front-end is implemented, enabling the realization of a robust multi-LO triple-carrier-aggregation...

By Dror Regev, Shimi Shilo, Doron Ezri, Junping Zhang

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November 13, 2017

Low-PAPR OFDM-based waveform for fifth-generation cellular communications

We introduce a novel technique for improving PA efficiency and coverage of communication links, especially advantageous for the uplink at high frequencies (cm/mm-Waves). The technique is based on a superposition of several DFT-s-OFDM (a.k.a. SC-FDM) signals, whose modulated symbol sequences...

By Yoav Levinbook, Doron Ezri, Ezer Melzer

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October 26, 2017

Trapezoidal block split using orthogonal C2 transforms for HEVC video coding

We present an extension for HEVC intra-frame coding with trapezoidal splits and orthogonal transforms. A block can be split into two 180-degrees rotationally-symmetric (C2) trapezoidal parts, each coded separately using standard DCT implementation.

By Itsik Dvir, Amiram Allouche, David Drezner, Ady Ecker, Dror Irony, Natan Peterfreund, Haitao Yang, Zhou Jiantong

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September 11, 2017

ScaleSimulator: A Fast and Cycle-Accurate Parallel Simulator for Architectural Exploration

Design of next generation computer systems should be supported by simulation infrastructure that must achieve a few contradictory goals such as fast execution time, high accuracy, and enough flexibility to allow comparison between large numbers of possible design points.

By Ori Chalak, Cai Weiguang, Li Wei, Fang Lei, Zheng Libing, Wang Jintang, Wu Zuguang, Gu Xiongli, Wang Haibin, Avi Mendelson

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