Abstract: A unified minimum mean square error (MMSE) equalization/multi-user detection (MUD) approach for demodulating direct sequence CDMA (DS-CDMA) signals is described. In at least one embodiment, the unified approach is capable of generating a variety of cost-effective receiver demodulation techniques that may range from, for example, a low cost linear MMSE equalization technique to a relatively high complexity MMSE MUD.

Abstract: A receiver in a wireless communication system utilizes a metric to minimize the error probability in transmitted information. The receiver may use a detector utilizing multiuser detection or rake detection. The output symbols of the detector are examined and a metric is obtained related to the noise and interference that may have distorted the transmission of the symbol. This metric is supplied to a channel decoder along with the symbol to improve decoding.

Abstract: A unified minimum mean square error (MMSE) equalization/multi-user detection (MUD) approach for demodulating direct sequence CDMA (DS-CDMA) signals is described. In at least one embodiment, the unified approach is capable of generating a variety of cost-effective receiver demodulation techniques that may range from, for example, a low cost linear MMSE equalization technique to a relatively high complexity MMSE MUD.

Abstract: The present invention is a channel estimator based on the values of received data and on a priori probabilities only of received symbols. The channel estimator includes a symbol probability generator, a noise variance estimator and a channel tap estimator. The symbol probability generator generates a priori probabilities only of transmitted symbols found in the received signal(s). The noise variance estimator estimates at least one noise variance corrupting the received signal(s). The channel tap estimator generates channel estimates from the received signal(s), the a priori probabilities and the noise variance(s).

Abstract: Briefly, according to embodiments of the invention, there is provided a wireless communication system and a method to schedule a wireless system resource. The wireless communication resource is being used by both first and second wireless communication devices. The first and second communication devices are able to transmit space time block codes according to a predetermined diversity scheme on substantially the same Time-Frequency resources.

Abstract: Linear transformations are carried out on a matrix that represents information such as an image or a communication. In an aspect, the matrix is processed to remove duplicate information. The duplicate information can be duplicate rows, or zero rows. This matrix is then transformed into a modified matrix, indicating duplicate information is removed to produce a modified matrix.

Abstract: A system to decode a multirate CDMA signal. In one aspect the system includes a high rate detector to generate high rate outputs based upon decoding an input signal that includes high rate users and low rate users. The high rate outputs include actual high rate users and effective high rate users. A second stage applies a first linear transformation to the high rate outputs to generate second stage outputs. A third stage applies a second linear transformation to the second stage outputs to generate decoupled low rate user outputs and decoupled actual high rate user outputs.

Abstract: Embodiments of the present invention provide a method, apparatus and system for detecting a transmitted signal according to a detection algorithm selected from two or more detection algorithms based on a predetermined selection criterion.

Abstract: Embodiments of the present invention provide a system, method, and apparatus of receiving signals of a plurality of communication services. The apparatus may include, for example, a plurality of multimode receivers to receive signals of a plurality of wireless communication services, wherein the number of the plurality of communication services is equal to or greater than the number of the plurality of multimode receivers; and a controller to control a receive mode of the plurality of receivers. Other embodiments are described and claimed.

Abstract: Briefly, a wireless communication device having two or more different wireless radio frequency (RF) units operably coupled to a router by two or more respective buses. The router is able to route bit streams of radio frequency signals from a digital baseband unit to one of the two or more RF units via one of the two or more buses. A method for routing the bit streams is also provided.

Abstract: A signal processing apparatus to equalize a signal in a multipath channel, where the equalization is based upon forming a correlation vector and the inverse of a covariance matrix, where the covariance matrix is smaller in dimension than the correlation vector. In one embodiment, the signal processing apparatus forms an extended matrix from the inverse of the covariance matrix, equal in dimension to the correlation vector, by selecting one or more rows of the inverse covariance matrix and shifting the selected one or more rows to form the extended matrix. The extended matrix is multiplied by the correlation vector to provide filter weights to the equalizer. In some embodiments, filtering is performed by a sliding window correlator based upon the selected one or more rows of the covariance matrix, followed by filtering based upon the correlation vector.

Abstract: Embodiments of the present invention provide a system, method, and apparatus of adjusting a wireless communication signal. In some demonstrative embodiments the method may include, for example, allocating a plurality of spectral components to an adjustment signal based on a spectral range of the wireless communication signal to be adjusted by the adjustment signal, wherein one or more of the spectral components are included in the spectral range. Other embodiments are described and claimed.

Abstract: A packet of encoded data is received and decoded using a look-up table that stores information approximating output of an algorithmic decoding process.

Abstract: An apparatus and a communication device including a turbo decoder to decode a block of encoded data bits that includes information bits and error detection code bits. The turbo decoder is able to produce a decoded block which includes decoded information bits and decoded error detection code bits. The Turbo decoder is able to determine from the decoded error detection code bits and calculated error detection code bits possible error patterns of the error detection code bits and is able to generate from the possible error patterns and/or from the error detection code bits reliability metrics.

Abstract: Embodiments of a wireless communication system employing interference-sensitive mode selection and associated methods are generally introduced.

Abstract: A packet of encoded data is received and decoded using a look-up table that stores information approximating output of an algorithmic decoding process.

Abstract: A packet of encoded data is received and decoded using a look-up table that stores information approximating output of an algorithmic decoding process.

Abstract: Embodiments of a wireless communication system employing interference-sensitive mode selection and associated methods are generally introduced.

Abstract: Some embodiments of the invention provide devices, systems and methods of point to multipoint communication. For example, an apparatus in accordance with an embodiment of the invention includes a resource allocator to allocate a wireless communication channel resource to one or more stations of a wireless communication system based on a net benefit function that takes into account an overhead incurred by controlling the allocation of said channel resource.

Abstract: Briefly, some embodiments of the invention provide devices, systems and methods of wireless multiple access transmission. For example, a method in accordance with an embodiment of the invention may include estimating channel quality values of a set of pilot signals received at different, respective, frequency slots of an uplink channel; and allocating an uplink frequency band for said uplink channel based on said estimated channel quality values.