1
Hang Jin, Joseph R Cleveland: Adaptive digital pre-distortion circuit using output reference signal and method of operation. Samsung Electronics, June 15, 2004: US06751447 (63 worldwide citation)

There is disclosed a pre-distortion correction circuit for use in an RF transmitter having a transmit path for receiving and amplifying an RF input signal. The pre-distortion correction circuit modifies distortion in the RF output signal caused by an RF power amplifier in the transmit path. The pre- ...


2
Yanxin Na, Hang Jin: Orthogonal/partial orthogonal beamforming weight generation for MIMO wireless communication. Cisco Technology, Edell Shapiro & Finnan, February 8, 2011: US07884763 (40 worldwide citation)

Techniques are provided for computing beamforming weight vectors useful for multiple-input multiple-output (MIMO) wireless transmission of multiple signals streams from a first device to a second device. The techniques involve computing a plurality of candidate beamforming weight vectors based on th ...


3
Brian L Kurtz, Hang Jin, Weidong Yang, Daniel Wee, Philip B Davis, John Grabner: Method and system for control channel beamforming. Cisco Technology, October 18, 2011: US08040831 (34 worldwide citation)

A system and method for managing control information in a wireless communications system. The method comprises broadcasting a predetermined number of preambles through beamforming from a base station, detecting, by a subscriber station, a predetermined frame associated with one selected preamble tha ...


4
Hang Jin, Weidong Yang: Method and system for reducing wireless multi-cell interferences through segregated channel assignments and segregated antenna beams. Navini Networks, Preston Gates & Ellis, December 19, 2006: US07151937 (34 worldwide citation)

A wireless communication system is disclosed. An available frequency spectrum is divided into multiple channels, a first wireless communication coverage unit is then segregated into a first number of geographical segments. After the segregated channels are grouped into a second number of channel blo ...


5
Guanghan Xu, Hang Jin, Weidong Yang: Method and system for reducing wireless multi-cell interferences through segregated channel assignments and segregated antenna beams. Navini Networks, Preston Gates & Ellis, June 14, 2005: US06907246 (32 worldwide citation)

A method and system is disclosed for reducing multi-frequency signal interference in a wireless communication network. An available frequency spectrum is divided into a plurality of channels, a first wireless communication coverage unit is then segregated into a first number of geographical segments ...


6
Hang Jin, Guanghan Xu, Xinguang Xu: Wireless enhancer using a switch matrix. Navini Networks, Preston Gates & Ellis, June 7, 2005: US06904266 (30 worldwide citation)

An improved enhancer is disclosed which uses a switch matrix to increase the isolation between two antennas. For either an reverse link or forward link communication, the enhancer has a first antenna for receiving an incoming signal, and a receiver sub-system that amplifies and converts the incoming ...


7
Yanxin Na, Hang Jin: Open-loop beamforming MIMO communications in frequency division duplex systems. Cisco Technology, Edell Shapiro & Finnan, March 13, 2012: US08134503 (24 worldwide citation)

Techniques are provided for wireless communication between a first wireless communication device and a second wireless communication device. At a plurality of antennas of the first wireless communication device, one or more signals transmitted by a second wireless communication device in a first fre ...


8
Hang Jin, Joseph R Cleveland: Adaptive digital pre-distortion correction circuit for use in a transmitter in a digital communication system and method of operation. Samsung Electronics, John C Han, September 10, 2002: US06449466 (23 worldwide citation)

There is disclosed an adaptive pre-distortion correction circuit for use in an RF transmitter having a transmit path capable of receiving a digital input baseband signal and generating a modulated RF output signal. The adaptive pre-distortion circuit comprises 1) input sampling means coupled to an i ...


9
Guanghan Xu, Hang Jin, Weidong Yang: Method and system for reducing wireless multi-cell interferences through segregated channel assignments and segregated antenna beams. Navini Networks, Preston Gates & Ellis, June 13, 2006: US07062276 (22 worldwide citation)

A method and system is disclosed for reducing multi-frequency signal interference in a wireless communication network. An available frequency spectrum is divided into a plurality of channels, a first wireless communication coverage unit is then segregated into a first number of geographical segments ...


10
Li Guo, Hang Jin, Paul J Stager, Neil R Diener, Matthew A Silverman, Chandra Vaidyanathan: Adaptive interference nulling for MIMO receiver based on interference characteristics. Cisco Technology, Edell Shapiro & Finnan, March 18, 2014: US08676144 (19 worldwide citation)

Interference in an unlicensed frequency band is spatially filtered out from received signals at a wireless device operating in the unlicensed frequency band. Energy received at a plurality of antennas of the wireless is device is analyzed to detect interference in the unlicensed frequency band. The ...