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| Number | Title | Issue Date |
| 8130727 | Quasi-orthogonal allocation of codes in TD-CDMA systems Systems and methodologies are described that facilitate increasing throughput in a time-division duplexed CDMA wireless communication environment. A set of orthogonal Walsh code sequences can be assigned to a first group of users in a network sector, and a duplicate... | 03/06/2012 |
| 8085831 | Interference control via selective blanking/attenuation of interfering transmissions Inter-sector interference for a target user in a sector may be controlled by selectively blanking or attenuating transmit powers for interfering users in neighboring sectors whenever their transmissions collide. The sector provides the frequency hopping (FH) sequenc... | 12/27/2011 |
| 8068530 | Signal acquisition in a wireless communication system Each base station transmits a TDM pilot 1 having multiple instances of a pilot-1 sequence generated with a PN1 sequence and a TDM pilot 2 having at least one instance of a pilot-2 sequence generated with a PN2 sequence. Each base station is assigned a specific PN2 s... | 11/29/2011 |
| 8064904 | Internetworking between a first network and a second network A general global gateway (GGG) internetworks between a first network and a second network so that a mobile station having a subscription in a first network can roam into a second network and be authenticated to use the second network. The GGG obtains authentication ... | 11/22/2011 |
| 8027372 | Signal acquisition in a wireless communication system Each base station transmits a TDM pilot 1 having multiple instances of a pilot-1 sequence generated with a PN1 sequence and a TDM pilot 2 having at least one instance of a pilot-2 sequence generated with a PN2 sequence. Each base station is assigned a specific PN2 s... | 09/27/2011 |
| 8005420 | Method and apparatus for seamlessly switching reception between mutlimedia streams in a wireless communication system Techniques to seamlessly switch reception between multimedia programs are described. For “continued decoding”, a wireless device continues to receive, decode, decompress, and (optionally) display a current program, even after a new program has been selected, unt... | 08/23/2011 |
| 7974359 | Methods and apparatus for mitigating multi-antenna correlation effect in communication systems The disclosed embodiments provide for methods and systems for transmitting a number of streams of modulation symbols by a multi-antenna transmitter. In one aspect, a method for transmitting a number of streams of modulation symbols by a multi-antenna transmitter inc... | 07/05/2011 |
| 7953451 | Method of an apparatus for handling messages in a mobile communications environment A method and system of transferring messages from a message source to a mobile station in a cellular system comprises assigning to each message a priority characteristic before the message is transmitted to mobile station. The message is then transmitted together wi... | 05/31/2011 |
| 7949047 | System and method for partial intraframe encoding for wireless multimedia transmission Digital multimedia includes intraframe information and interframe information. In addition to sending separate complete intraframes that are referenced by interframes, some interframes (“hybrid” frames) contain partial intraframe information, so that if a comple... | 05/24/2011 |
| 7940710 | Methods and apparatus for efficient paging in a wireless communication system The disclosed embodiments provide for methods and systems for monitoring a paging channel. In one aspect, a method for monitoring a paging channel includes monitoring a paging channel for a page message at scheduled paging slots, determining that an error has occurr... | 05/10/2011 |
| 7933565 | Transformer coupling of antennas Embodiments describe improved coupling of power amplifiers to antennas for the transmission of signals, such as OFDM signals. A large number of separate windings are utilized on a primary side, wherein each winding is for a different OFDM tone. Each OFDM tone may be... | 04/26/2011 |
| 7925715 | Apparatus and methods for service programming of a wireless device on a wireless communications network Apparatus, methods, and programs for servicing persistent storage items on a wireless device. Embodiments include a wireless device having a computer platform with a module operable to retrieve and/or change persistent storage items on the wireless device based on a... | 04/12/2011 |
| 7907574 | Channel scheduling A method for transmitting data in a code division multiple access (CDMA) communication network, consisting of allocating a common Walsh code to a group of transceivers, and allocating a respective, different long code to each transceiver in the group. The method fur... | 03/15/2011 |
| 7898954 | Power-efficient data reception in a communication system with variable delay To conserve power, a terminal operates in a “power save” mode in which the terminal is in a “doze” state when there is a low probability of receiving an incoming packet and in an “awake” state when an incoming packet is expected. In the doze state, the t... | 03/01/2011 |
| 7881245 | Local and wide-area transmissions in a wireless broadcast network To broadcast different types of transmission having different tiers of coverage in a wireless broadcast network, each base station processes data for a wide-area transmission in accordance with a first mode (or coding and modulation scheme) to generate data symbols ... | 02/01/2011 |
| 7860193 | Coarse timing estimation system and methodology for wireless symbols A system that facilitates obtaining a coarse estimation of a boundary of symbol with respect to time comprises a peak detector that detects a peak energy of an energy distribution output by a correlator, and an estimating component that adaptively estimates a bounda... | 12/28/2010 |
| 7843991 | Methods and apparatus for monitoring voice quality on a wireless communication device Methods and apparatus for providing monitoring of voice quality and diagnostic data related to voice quality on a wireless device. Monitoring thresholds can be implemented that allow for additional precautionary measures and/or further monitoring to occur if a thres... | 11/30/2010 |
| 7840382 | Methods and apparatus for network re-creation in controlled environments Methods and apparatus for network re-creation in controlled environments. In an aspect, a method for network re-creation is provided. The method includes determining a logging window, logging at least one re-creation parameter during the logging window to produce a ... | 11/23/2010 |
| 7839834 | Radio link protocols for a wireless communication system A forward link (FL) RLP and a reverse link (RL) RLP that are different in design are used for data transmission on the forward and reverse links, respectively. The asymmetric RLP designs may be quantified by, e.g., different feedback mechanisms and/or different data... | 11/23/2010 |
| 7835460 | Apparatus and methods for reducing channel estimation noise in a wireless transceiver Apparatus and methods for use in a wireless communication system are disclosed for reducing channel estimation noise in a device such as a wireless transceiver. A disclosed apparatus includes a processor that determines a channel activity portion and a noise portion... | 11/16/2010 |
| 7773702 | Gain control for a receiver in a multi-carrier communication system A receiver in an OFDM communication system includes a power detector and a gain controller. The power detector detects for total received power of a received OFDM signal, e.g., by computing the power of the data samples from an ADC and averaging the power. The gain ... | 08/10/2010 |
| 7770785 | Apparatus and methods for detection and management of unauthorized executable instructions on a wireless device Detection and management methods and apparatus for wireless devices may include an executable instruction authorization module operable to scan executable instructions on a wireless device, generate a log indicative of a virus or otherwise unauthorized executable in... | 08/10/2010 |
| 7746760 | Frequency error estimation and frame synchronization in an OFDM system Frequency error estimation and frame synchronization are performed at a receiver in an OFDM system based on a metric that is indicative of detected pilot power. The metric may be defined based on cross-correlation between two received symbols obtained in two OFDM sy... | 06/29/2010 |
| 7724838 | Hierarchical coding with multiple antennas in a wireless communication system Techniques are provided for performing hierarchical coding in a multi-antenna communication system (e.g., a SIMO, MISO, or MIMO system). At a transmitter, a base stream and an enhancement stream are coded and modulated separately to obtain first and second data symb... | 05/25/2010 |
| 7724777 | Quasi-orthogonal multiplexing for a multi-carrier communication system For quasi-orthogonal multiplexing in an OFDMA system, multiple (M) sets of traffic channels are defined for each base station. The traffic channels in each set are orthogonal to one another and may be pseudo-random with respect to the traffic channels in each of the... | 05/25/2010 |
| 7720999 | System and method for optimizing multimedia compression using plural encoders A multimedia stream is compressed in parallel by plural encoders, the compressed stream outputs of which are dynamically evaluated for merit. A best one of the compressed streams is transmitted, along with information regarding the particular compression algorithm t... | 05/18/2010 |
| 7702712 | FFT architecture and method A Fast Fourier Transform (FFT) hardware implementation and method provides efficient FFT processing while minimizing the die area needed in an Integrated Circuit (IC). The FFT hardware can implement an N point FFT, where N=rn is a function of a radix (r).... | 04/20/2010 |
| 7675886 | Rate adaptive transmission scheme for MIMO systems A rate adaptive transmission scheme for MIMO systems, which can transmit a variable number of data symbol streams, provide transmit diversity for each data symbol stream, and fully utilize the total transmit power of the system and the full power of each antenna. In... | 03/09/2010 |
| 7668125 | Incremental redundancy transmission for multiple parallel channels in a MIMO communication system For incremental redundancy transmission on multiple parallel channels in a MIMO system, a transmitter processes (e.g., encodes, partitions, interleaves, and modulates) each data packet for each parallel channel based on a rate selected for the parallel channel and o... | 02/23/2010 |
| 7660275 | Local and wide-area transmissions in a wireless broadcast network To broadcast different types of transmission having different tiers of coverage in a wireless broadcast network, each base station processes data for a wide-area transmission in accordance with a first mode (or coding and modulation scheme) to generate data symbols ... | 02/09/2010 |
| 7649939 | Apparatus and method for decoding and computing a discrete cosine transform using a butterfly processor An apparatus to determine the inverse transform of a block of encoded data the block of encoded data comprising a plurality of compressed frequency domain data elements. An input register is configured to receive a predetermined quantity of data elements. At least o... | 01/19/2010 |
| 7636328 | Efficient transmission of signaling using channel constraints To transmit signaling, a base station obtains signaling for a group of channels used for data transmission and selected from a set of channels having constraints on usage. The base station compresses the signaling based on the channel constraints and obtains at leas... | 12/22/2009 |
| 7630563 | System and method for decoding digital image and audio data in a lossless manner A method of losslessly decoding signals representing an image is claimed. A lossy compressed data file and a residual compressed data file are received. The lossy compressed data file is separated into DC coefficients and AC coefficients, and decoded, separately, to... | 12/08/2009 |
| 7623490 | Systems and methods that utilize a capacity-based signal-to-noise ratio to predict and improve mobile communication Techniques for utilizing a capacity-based effective signal-to-noise ratio (SNR) to improve wireless communication are described herein. In an embodiment, a mobile terminal can determine the effective SNR from a forward link channel using pilot/data symbols. The mobi... | 11/24/2009 |
| 7616711 | Frequency domain filtering to improve channel estimation in multicarrier systems A channel estimation system comprises a filtering component that selectively scales a plurality of carriers as a function of location of the plurality of carriers within a frequency band, wherein the plurality of carriers comprises at least one data carrier and at l... | 11/10/2009 |
| 7609786 | Channel estimation for a communication system using spectral estimation Techniques for performing channel estimation in a multi-carrier system are described. A frequency response estimate is initially obtained for a wireless channel based on a narrowband pilot sent on different sets of subbands in different symbol periods or a wideband ... | 10/27/2009 |
| 7551545 | Subband-based demodulation for an OFDM-based communication system For subband-based OFDM demodulation, a “partial” Fourier transform is performed on a sequence of N input samples for an OFDM symbol to obtain Nc received symbols for a group of Nc data subbands, where Nc·L=N and L>1. For the par... | 06/23/2009 |
| 7548752 | Feedback to support restrictive reuse The scheduler in a base station needs CQI information from a terminal for all reuse sets every 5 ms. to decide on which re-use set to schedule a given terminal. For MIMO users, the problem is that the CQI cannot be reconstructed for all re-use sets, using the curren... | 06/16/2009 |
| 7543197 | Pruned bit-reversal interleaver A pruned bit-reversal interleaver supports different packet sizes and variable code rates and provides good spreading and puncturing properties. To interleave data, a packet of input data of a first size is received. The packet is extended to a second size that is a... | 06/02/2009 |
| 7508748 | Rate selection for a multi-carrier MIMO system To select a rate for data transmission in a multi-carrier MIMO system with a multipath MIMO channel, a post-detection SNR SNRl(k) for each subband k of each spatial channel l is initially determined and used to derive a constrained spectral efficiency S | 03/24/2009 |
