Motorola Corporation

Google Inc.

Freescale Semiconductor,inc.

General Instrument Corporation

Motorola Mobility LLC

Anthony R Schooler

David P Gurney

Yun H Kim

Zhuan Ye

Pallab Midya

Thomas Peter Krauss

William John Rinderknecht

Yufei W Blankenship

Brian Keith Classon

Ajit Nimbalker

Michael J Carney

William J Roeckner

John K Grosspietsch

T Keith Blankenship

Bryan S Nollett

Richard DiColli

Kevin M Andrews

David D Kang

Benson Chau

W John Rinderknecht

Karen K Hicks

A wireless communication transmitter () configured to segment a transport block into C segments, encode each segment into a set of encoded bits, determine, for &#x3b3; encoded segments, a subset of size M' of encoded bits for each encoded segment and for C&#x2212;&#x3b3; encoded segments, a subset of size M&#x2032; of encoded bits for each encoded segment, wherein the subset sizes M&#x2032; and M&#x2032; differ at most by P bits, where P is a product of a modulation order and a number of transmission layers over which the transport block is transmitted. The selected subsets of encoded bits are concatenated and grouped to form modulation symbols of the modulation order.

Physical channel segmentation in wireless communication system

Methods and apparatus for estimating time of arrival information associated with a wireless signal are disclosed. In an embodiment, a wireless device (), or any other suitable device or system, determines a channel type based on multiple occurrences of a reference signal () (e.g., determine if a channel is delay-spread or non-delay-spread based on a ratio of largest peak to a mean of other peaks). The wireless device () then selects a time of arrival generator (or) based on the channel type (e.g., use delay-spread estimator if ratio is below threshold, and use non-delay-spread estimator if ratio is above threshold). The wireless device then () estimates the time of arrival information using the selected time of arrival generator (or) (e.g., sum peaks from multiple occasions and then estimate for delay-spread or estimate the time of arrival from each occasion and then average for non-delay-spread).

Methods and apparatus for estimating time of arrival information associated with a wireless signal

The present invention discloses a method and apparatus for wide dynamic range phase conversion. In one embodiment, inphase and quadrature signal components of a complex input signal are collapsed into a single quadrant to produce a first signal representation. A scaling operation is subsequently performed on the first signal representation to produce a second signal representation. Lastly, the second signal representation is converted into the phase domain.

Method and apparatus for wide dynamic range reduction

A noise thresholder of a baseband modem integrated circuit (BMIC) compares measured noise variances on corresponding receiver paths to a pre-established threshold minimum value. The noise thresholder assigns as a noise variance value for a corresponding receiver path either (a) a measured noise variance value for each receiver path having a measured noise variance that is larger than the pre-established threshold minimum, and (b) the pre-established threshold minimum value for each receiver path having a measured noise variance that is less than or equal to the pre-established threshold minimum value. A noise balancer performs noise balancing to provide a same signal to noise ratio (SNR) across all receiver paths, based on the assigned noise variances provided at the noise thresholder. A detection engine utilizes a lowest assigned noise variance value and outputs yielded by the noise balancer to simplify equalization computations while providing a high performance symbol detection capability.

Noise power thresholding and balancing for long term evolution (LTE) symbol detection

A method for improving burst acquisition in a receiver includes receiving a signal, and performing a sync word search on the signal, wherein the sync word search includes performing a hybrid synchronization technique, the hybrid synchronization technique including both a lower order modulation (e.g., BPSK) detection and correlation process and a higher order modulation (e.g., QPSK) detection and correlation process.

Method and apparatus for improved burst acquisition in a digital receiver

A method and apparatus of converting a data signal in a digital rate converter including upsampling the input data signal at an input sampling rate to an intermediate data signal at an intermediate sampling rate, where the intermediate data signal sample values are stored in a buffer. A plurality of buffer position values are provided from a subset of buffer positions of the buffer to an interpolator, the subset of buffer positions being dependent upon a position indicator. An output data signal is provided by the interpolator at an output sampling rate, where the value of the output data signal is dependent upon a fractional indicator provided to the interpolator. The input sampling rate is based on a first clock signal and the output sampling rate is based on a second clock signal, wherein the first and second clock signal are independent of each other.

Digital rate converter

An audio amplifier includes a digital signal processor (DSP) that contains a noise shaping quantizer having an integrating error amplifier. The integrating error amplifier contains integrators connected in a feedback loop, a summer supplied with an output of each of the integrators, and a saturation function module producing a saturation function. A multiplier is disposed between each pair of adjacent integrators. The multiplier receives a signal from one of the adjacent integrators and the saturation function and supplies a signal to the other of the adjacent integrators. The saturation function decreases the effect of all of the integrators except an integrator to which an input signal to the integrating amplifier is supplied using an input signal to and/or an output signal from the noise shaping quantizer. This permits the duty ratio of the output signal from the noise shaping quantizer to extend from 0% to 100%.

Digital saturation handling in integral noise shaping of pulse width modulation

A programmable correlator for a communication system includes an input queue coupled with an analog-to-digital converter (ADC). The input queue includes a random access memory (RAM) wherein sampled data streams from the ADC are written into the RAM. The input queue has two banks of memory of width 2M. A flexible complex correlator is operable on M samples. The correlator is coupled to read M complex samples out of 2M samples from the input queue. A pseudo-noise (PN) crossbar unit operates to rotate a generated PN code to match a rotation of the input queue data in the complex correlator.

Flexible correlation and queueing in CDMA communication systems

The invention provides a method for generating a code sequence. A code-generation instruction is received from memory. One or more control signals are determined based on the code-generation instruction. A code sequence is generated based on the control signals, a current state input, and a mask input.

Method and system for a programmable code generator

A method for performing timing synchronization between digital input data and a system clock in a communication device includes providing a system clock rate that is higher than a data clock rate and sampling the input data at intervals in the system clock periods within the data clock period. The method includes adjusting the timing between the digital input data and the system clock by either shortening the number of system clock periods and sampling intervals, or lengthening the number of system clock periods and sampling the input data at normal intervals and providing data insertion to fill one of the extra system clock periods, such that more data samples are provided in the data clock period.

Timing synchronization in a communication device

An apparatus and method of filtering at least one set of data comprises determining a subset of Q data elements of a set of L data elements (12), and determining a filtered value based upon the subset of Q data elements (14). Each of the subset of Q data elements is greater than at most a first predetermined number of the L data elements and greater than or equal to at least a second predetermined number of the L data elements other than itself.

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Bartlett, IL, United States of America

Anthony R Schooler