Joshua L Koslov

6668029, Dec 23, 2003

Oct 15, 1999

09/419265

Joshua L. Koslov - Hopewell NJ
Frank Anton Lane - Medford Lakes NJ

Hitachi America, Ltd. - Tarrytown NY

H04B 110

375350, 375355, 704265, 708313

Methods and apparatus for implementing digital resampling circuits which create one or more bitstreams which include samples at desired rates, from an input bitstream having a fixed sample rate, are described. The resampling circuits of the present invention achieve the desired sample rates by performing digital interpolation on samples included in the input signal. The interpolation is performed using a filter, e. g. , an all-pass infinite impulse response filter which produces an output as a function of a controllable signal delay.

7127019, Oct 24, 2006

Jun 21, 2001

09/886591

Joshua L. Koslov - Hopewell NJ, US

Hitachi, Ltd. - Tokyo

H04L 7/00
H03D 1/04

375371, 375346

Methods and apparatus for reducing phase jitter in a multi-tone, e. g. , OFDM, receiver are described. A jitter compensation filter is used to process a received signal following timing recovery and/or channel compensation to reduce and/or eliminate the effect of phase jitter. Jitter compensation filter tap weights are updated after filtering the received signal based on one or more signal error measurements. The same received signal is filtered using the updated filter, and error measurements generated from the filtered signal are used to once again update the filter's tap weights. After a fixed number of filter update cycles and/or some other filter updating stop criterion being satisfied, the filter updating process is stopped and the filtered signal is used, e. g. , supplied to additional receiver circuitry.

7464318, Dec 9, 2008

Apr 24, 2004

10/554580

Joshua Lawrence Koslov - Hopewell NJ, US
Kumar Ramaswamy - Princeton NJ, US
Wen Gao - Plainsboro NJ, US

Thomson Licensing - Boulogne Billancourt

H03M 13/00

714759, 714780

A satellite communications system comprises a transmitting ground station, including a transmitter and a receiver, a satellite transponder and a receiving ground station. The transmitter transmits an uplink signal to the satellite transponder, which broadcasts the received uplink signal as a downlink signal to the receiving ground station. The transmitting ground station monitors the downlink signal through the receiver and calculates log-likelihood ratios (LLRs) as a function of the monitored downlink signal. These LLRs are illustratively stored in a look-up table, which are then transmitted to the receiving ground station for use in recovering data from a received data signal.

7532683, May 12, 2009

Apr 24, 2004

10/556544

Joshua Lawrence Koslov - Hopewell NJ, US
Kumar Ramaswamy - Princeton NJ, US

Thomson Licensing - Boulogne-Billancourt

H03K 9/00

375316

A satellite receiver includes a down converter for providing a received signal and a demodulator having at least two demodulation modes for demodulating the received signal, wherein one demodulation mode is hierarchical demodulation and another demodulation mode is layered demodulation.

7616706, Nov 10, 2009

Apr 30, 2004

10/556538

Joshua Lawrence Koslov - Hopewell NJ, US

Thomson Licensing - Boulogne-Billancourt

H04L 27/06

375316

A satellite communications system comprises a transmitter, a satellite transponder and a receiver. The transmitter transmits an uplink multi-level modulated signal (hierarchical modulation or layered modulation) to the satellite transponder, which broadcasts the multi-level modulated signal downlink to one, or more, receivers. The transmitter includes a repetition coder for repetition coding at least one level, e. g. , a lower level, of the multi-level modulated signal. In complementary fashion, the receiver includes a repetition decoder for use in decoding the at least one repetition coded level of the received multi-level modulated signal.

7907639, Mar 15, 2011

Apr 30, 2004

10/554936

Joshua Lawrence Koslov - Hopewell NJ, US
Kumar Ramaswamy - Princeton NJ, US

Thomson Licensing - Boulogne, Billancourt

H04J 3/06

370503, 370350

A satellite communications system comprises a transmitter, a satellite transponder and a receiver. The transmitter transmits an uplink multi-level modulated signal (hierarchical modulation, layered modulation, etc. ) to the satellite transponder, which broadcasts the multi-level modulated signal downlink to one, or more, receivers. The multi-level modulated signal comprises an upper layer and a lower layer. The lower layer conveys LDPC blocks, or LDPC frames, each LDPC block comprising S bits of data including a header portion and a data-bearing portion. The upper layer conveys shorter blocks, each shorter block comprising R bits of data, where R

7949074, May 24, 2011

Apr 24, 2004

10/555617

Wen Gao - Plainsboro NJ, US
Joshua Lawrence Koslov - Hopewell NJ, US

Thomson Licensing - Boulogne Billancourt

H04L 27/06

375340, 375346

A satellite receiver receives a hierarchical modulation based received signal, which has at least an upper layer (UL) and a lower layer (LL), and simultaneously recovers therefrom data conveyed in the UL signal and data conveyed in the LL signal.

7966505, Jun 21, 2011

Jun 27, 2005

11/921486

Wen Gao - West Windsor NJ, US
Joshua Lawrence Koslov - Hopewell NJ, US

Thomson Licensing - Boulogne-Billancourt

H03M 13/37
G06F 11/00

713320, 713300, 341 50, 341 51

There are provided a method, an apparatus and a computer program product for reducing power consumption in an iterative decoder. The apparatus includes a memory device and an iteration termination device. The memory device is for storing a bit number difference indicating a number of bits that are different between a decoded codeword for a current iteration and a decoded codeword for a previous iteration, for each iteration of the iterative decoder prior to a maximum number of iterations. The iteration termination device is for comparing the bit number difference to a pre-specified bit number difference threshold value, incrementing a confidence value when the bit number difference exceeds the pre-specified bit number difference threshold value, and terminating further iterations of the iterative decoder when the confidence value exceeds a pre-specified confidence threshold value.