Articles

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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August 1, 2017

Fiber-based architecture for NFV cloud databases

The telco industry is gradually shifting from using monolithic software packages deployed on custom hardware to using modular virtualized software functions deployed on cloudified data centers using commodity hardware. This transformation is referred to as Network Function Virtualization (NFV). The...

By Vaidas Gasiunas, David Dominguez-Sal, Ralph Acker, Aharon Avitzur, Ilan Bronshtein, Rushan Chen, Eli Ginot, Norbert Martinez-Bazan, Michael Müller, Alexander Nozdrin, Weijie Ou, Nir Pachter, Dima Sivov, Eliezer Levy

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March 30, 2017

Carrier aggregation receiver employing direct recentred offset receivers

Carrier aggregation supports an increased total bandwidth, data rate and utilization of available fragmented spectrum, where the latter is a core component of next generation Wi-Fi and Cellular networks, including 5G. Wireless communications receivers with intra-band non-contiguous CA, employing conventional...

By Dror Regev, Shimi Shilo, Doron Ezri, Michael Moyal, Junping Zhang, Xiang Yi, Chirn Chye Boon

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December 19, 2016

ADS: A framework for running 5G radio access network in the cloud

In this paper we present the Automatic Distribution System (ADS). ADS is a novel framework that enables quick development and deployment of 5G radio access networks. ADS automatically parallelize radio algorithms and distributes their execution among standard servers in order...

By Yoni Baehr, Eilam Ben-Dror, Shougang Chai, Max Komm, Wenliang Liang, Vitaly Mirkis. Haim Moushkatel, Michael Naaman, Dan Touitou

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