1
Behrooz Rezvani, George Ginis: Method and apparatus for time-frequency domain forward error correction for digital communication systems. Ikanos Communication, IP Creators, Charles C Cary, December 13, 2005: US06976202 (31 worldwide citation)

A method and apparatus for time and frequency domain forward error correction (FEC) in a modem which communicates data using multiple discrete sub-channels is provided. The invention may be implemented in hardware, software or firmware. In an embodiment of the invention a modem with a plurality of c ...


2
Behrooz Rezvani: Method and apparatus for optimization of channel capacity in multi-line communication systems using spectrum management techniques. Ikanos Communication, IP Creators, Charles C Cary, April 8, 2008: US07356049 (25 worldwide citation)

The present invention advantageously provides a method and apparatus for optimization of channel capacity in multi-line multi-tone communications such as X-DSL among subscriber lines which are bundled with one another. In an embodiment of the invention an apparatus for optimizing channel capacity of ...


3
Behrooz Rezvani, Sam Heidari, Dale Smith: Method and apparatus for channel estimation for X-DSL communications. Ikanos Communication, IP Creators, Charles C Cary, January 10, 2006: US06985521 (21 worldwide citation)

An apparatus and method is disclosed for channel estimation in an X-DSL communication device. The communication device may include physical or logical modems. The modems may implement one or more of a group of X-DSL protocols including: G.Lite, ADSL, VDSL, and HDSL. The apparatus may be used for det ...


4
Sam Heidari, Behrooz Rezvani, Raminder S Bajwa, Jacky Chow, Avadhani Shridhar, Dale Smith, John Gevargiz, Saman Behtash: Method and apparatus for a variable bandwidth multi-protocol X-DSL transceiver. Ikanos Communication, IP Creators, Charles C Cary, January 1, 2008: US07315571 (15 worldwide citation)

A transceiver for communicating a multi-tone modulated communication channel on a subscriber line. The transceiver includes: a digital signal processor (DSP) with a Fourier transform module and an analog front end (AFE). The DSP determines an available range of frequencies on the subscriber line and ...


5
Rouben Toumani, Robert A Blauschild, Sanjay M Bhandari, Behrooz Rezvani, Dale Smith: Method and apparatus for a high efficiency line driver. Ikanos Communication, IP Creators, Charles C Cary, January 17, 2006: US06987851 (13 worldwide citation)

A high efficiency line driver is disclosed. The line driver may be applied with equal advantage in wired and wireless communication media to amplify data signals with a minimum of power consumption. In an embodiment of the invention a line driver is disclosed which includes: at least one amplifier, ...


6
Sam Heidari, Mazen M Shihabi, Saman Behtash, Hojat Khelghati, John Gevargiz, Avadhani Sridhar, Fernando Ramirez Mireles: Method and apparatus for initializing modem communications. Ikanos Communication, IP Creators, Charles C Cary, April 25, 2006: US07035326 (12 worldwide citation)

The present invention provides a method and apparatus for demodulating data received over a communication medium carrying a transmission having multiple pilot tones with pilot data modulated thereon and message tones with message data modulated thereon and with the pilot tones and message tones freq ...


7
Avadhani Shridhar, Behrooz Rezvani, Sushil Agarwal, Alfred Mui, Masoud Eskandari: Method and apparatus for dynamic multi-line bonding in communication systems. Ikanos Communication, IP Creators, Charles C Cary, July 29, 2008: US07406042 (9 worldwide citation)

A bundler, un-bundler and sequencer for use in controlling and driving opposing sets of logical or physical modems to drive multiple-subscriber lines with multiple communication channels. The sequencer determines subscriber requirements such as maximum and minimum bandwidth and quality of service. T ...


8
Sam Heidari, Raminder S Bajwa, Behrooz Rezvani, Dale Smith, Prem Ramaswamy: Method and apparatus for time domain equalization in an XDSL modem. Ikanos Communication, IP Creators, Charles C Cary, July 11, 2006: US07076010 (8 worldwide citation)

The current invention provides a method and apparatus for time domain equalization in an XDSL modem. A received communication channel is analyzed to determine the highest frequency component thereof. Typically, there is an inverse relationship between the length of a subscriber line and the highest ...


9
John Zhongxuan Zhang, Peter Gunadisastra, Dale Smith, Mong Yang, Ali Al Shamma: Method and apparatus for digital to analog conversion with distortion calibration. IKANOS Communication, Charles C Cary, IP Creators, December 31, 2002: US06501405 (8 worldwide citation)

An apparatus and method is disclosed for minimizing in band distortion in the transmit path of an XDSL modem. The transmit path of an XDSL modem introduces various non-linearities into transmissions in both the frequency and time domains. The current invention provides a means for both determining a ...


10
Firooz Massoudi: Method and apparatus for forward error correction. Ikanos Communication, IP Creators, Charles C Cary, March 13, 2007: US07191387 (6 worldwide citation)

A convolutional decoder for a wired or wireless receiver receiving an encoded datastream. The branch and path metric components compute branch and path metrics for the encoded datastream stream. The traceback unit couples to the path metric component to trace in each traceback interval a single path ...