Abstract: Systems and methods for motion estimation for video encoding are described. The method observes the motion from the previous frames of the video uses the same for predicting search pattern and classifying the motion for the current frame. The motion in the video is predicted by calculating the Temporal Redundancy Achieved for previous frames and the Block Movement Factor in the previous frame. The method also considers the available bandwidth for choosing the search pattern especially, in the case of video streaming in wireless mobile ad hoc networks.

Abstract: Methods, apparatuses and systems for identifying a channel bandwidth and channel offset of an orthogonal frequency division multiplexing (OFDM) signal. The OFDM signal is received by a receiver apparatus that may be tuned to RF bandwidth of 20 MHz, 40 MHz or 80 MHz. The method utilized by the apparatus includes identifying the location of the primary channel and subsequently determining a sequence of equalized frequency domain sub-symbols of the signal field in the lower and the upper frequency band. Further, a cross-correlation between the sequence of equalized frequency domain sub-symbols is computed along with the computing energy of the sequence of equalized frequency domain sub-symbols. Finally, the cross-correlation and the computed energy are compared for identifying the channel offset and the channel bandwidth.

Abstract: A method and apparatus for zooming an image by a zoom factor wherein a first image without zoom and a second image with fixed optical zoom are processed to find a mapping between low resolution patches and high resolution patches that are then used for zooming the first image if the zoom factor is less than the fixed optical zoom else the mapping between low resolution patches and high resolution patches are used for zooming the second image with fixed optical zoom.

Abstract: Systems and methods for Dynamic Wideband Channel Selection with which a wireless Access Point gets the ability to dynamically decide and switch to better available channels with wider bandwidths for higher efficiency and throughput taking care of the restrictions applied by the regulatory domains in the widespread spectrum.

Abstract: Various embodiments of a method, system and computer program product for correcting distortions in a multimedia content comprising a set of temporal images are disclosed. Each image of the set of temporal images is decomposed into patches. Thereafter, each set of temporal patches is parsed hierarchically to obtain a set of background components and one or more moving objects. Thereafter, the set of background components and the one or more moving objects are aggregated to reconstruct the multimedia content.

Abstract: Method and system for decomposing a complex channel matrix at MIMO receiver is disclosed. The method comprises determining a real channel matrix from the complex channel matrix, wherein the number of rows and columns of the real channel matrix depends on a number of transmitting chains and a number of receiving chains. Thereafter, the below mentioned steps repeated predetermined number of times: A pre-Householder vector is determined based on the real channel matrix. A Householder vector is determined based on the pre-Householder vector. Thereafter a Householder matrix is determined based on the Householder vector and a transpose of the Householder vector without performing division operation. Finally, an orthogonal matrix and an upper triangular matrix are determined based on the Householder matrix, wherein the upper triangular matrix comprises a predetermined number of zeros in an upper triangle.

Abstract: A low latency transmitter and receiver for an OFDM system are disclosed. The low latency transmitter includes an FFT module and a baseband modulator. The FFT module computes IDFT of PSK constellation data symbols or QAM constellation data symbols. The baseband modulator performs complex modulation of the IDFT samples by multiplying these samples with 1 and ?1 alternatively in time domain. The low latency receiver includes a baseband demodulator and another FFT module. The baseband demodulator performs complex demodulation of the received samples of OFDM symbols by multiplying the samples of OFDM symbols with 1 and ?1 alternatively in time domain thereby obtaining baseband demodulated symbols. The FFT module of the receiver computes DFT of samples of the baseband demodulated symbols to obtain samples of the OFDM demodulated symbols.

Abstract: A method and wireless receiver for determining a modulation format of a transmitted signal from a received signal over a multipath channel are disclosed. The received signal has a frequency offset with respect to the transmitted signal. The wireless receiver down-samples the received signal. The down-sampled signal is equalized in order to mitigate an effect of multipath channel. Then the wireless receiver applies differential processing on the equalized signal to convert the frequency offset into a constant phase offset. Thereafter, values of one or more moment based features for the equalized signal are determined by the wireless receiver. The modulation format of the received signal is then determined based on the values of one or more moment based features.

Abstract: Method and system for decomposing a complex channel matrix at MIMO receiver is disclosed. The method comprises determining a real channel matrix from the complex channel matrix, wherein the number of rows and columns of the real channel matrix depends on a number of transmitting chains and a number of receiving chains. Thereafter, the below mentioned steps repeated predetermined number of times: A pre-Householder vector is determined based on the real channel matrix. A Householder vector is determined based on the pre-Householder vector. Thereafter a Householder matrix is determined based on the Householder vector and a transpose of the Householder vector without performing division operation. Finally, an orthogonal matrix and an upper triangular matrix are determined based on the Householder matrix, wherein the upper triangular matrix comprises a predetermined number of zeros in an upper triangle.

Abstract: Various embodiments of a method, system and computer program product for correcting distortions in a multimedia content comprising a set of temporal images are disclosed. Each image of the set of temporal images is decomposed into patches. Thereafter, each set of temporal patches is parsed hierarchically to obtain a set of background components and one or more moving objects. Thereafter, the set of background components and the one or more moving objects are aggregated to reconstruct the multimedia content.