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8009637 Method and apparatus for spreading channel code selection  
Various embodiments are described which may serve to improve spreading channel code selection in wireless technologies that employ two-stage ranging. For example, some of the embodiments enable a...
8005168 Communication apparatus using chaotic signal and method thereof  
A communication apparatus using a chaotic signal and a method thereof are provided. The communication apparatus includes a correlator which multiplies source data by one of an optical orthogonal...
8005127 Retransmission in a cellular communication system  
An apparatus comprises a detection processor (203) for detecting retransmission feedback messages in response to a detection threshold. A threshold processor (207) determines the detection...
8000377 System and method for variable rate multiple access short message communications  
A communication system and receiver is provided that facilitates increased message size in a communication system that supports a large number of transmitters sharing a common frequency band. The...
7995644 Device, method and protocol for private UWB ranging  
An apparatus, system, method and computer program product for secure ranging between at least two devices in radio communications with each other. In particular, an apparatus, system, method and...
7983330 Encoding uplink acknowledgments to downlink transmissions  
A portable device, such as a mobile terminal or user equipment, for encoding uplink acknowledgments to downlink transmissions. The portable device includes a receiver configured to receive a...
7975008 System for channel congestion management  
A system for managing data traffic in a multi-user multiple-simultaneous-access (MUMSA) environment, for example in a code reuse multiple access (CRMA) environment or other physical environment...
7974331 Rake receiver with individual finger compensator(s)  
Rake receivers in code division multiple access (CDMA) telecommunication comprise fingers (1,2,3) with each finger processing signal components for a particular transmission path to be able to...
7974330 Multi-carrier code dividing multiplex transfer system and method, and receiving device  
The multi-carrier code dividing multiplex transfer system of the present invention includes a direct demodulator that discriminates transmitted signals according to a receiving signal point...
7949032 Methods and apparatus for masking and securing communications transmissions  
A secure information transmission system includes one or more transmitters and one or more receivers. The transmission waveform employed includes highly randomized, independent stochastic...
7940831 Direct sequence spread spectrum system and method thereof  
A method for a direct sequence spread spectrum communication system comprises encoding a first signal of data in a communication channel, embedding a second signal of data as notches in the...
7936729 Distribution method of channelization code in code division multiple access system  
The invention discloses a distribution method of channelization code in code division multiple access system, which including: A. the spread spectrum codes distributed to every sector and the...
7936739 Base station, a mobile station, a radio communications system, and a radio transmission method using spread spectrum and chip repetition  
A base station, a mobile station, a radio communications system, and a radio transmission method are disclosed. The base station includes a control information determining unit configured to...
7929917 Enhanced wideband transceiver  
A method for operating an integrated transceiver, comprising coupling an operating transmitter and an operating receiver within the integrated wideband receiver, inputting a signal into the...
7924905 Wireless communication apparatus and method thereof  
A wireless communication apparatus in a closed loop communication wherein a channel resource can be shared among users and hence the capacity of the communication system can be increased. In this...
7924907 Apparatus and method for spreading/de-spreading data using pair of child orthogonal variable spreading factor codes  
there is provided a spreading apparatus using a child orthogonal variable spreading factor (OVSF) code pair, including: a channel condition information receiving unit for receiving channel...
7916775 Encoding uplink acknowledgments to downlink transmissions  
A portable device, such as a mobile terminal or user equipment, for encoding uplink acknowledgments to downlink transmissions. The portable device includes a receiver configured to receive a...
RE42219 Multiple-input multiple-output (MIMO) spread spectrum system and method  
A system and method for transmitting a plurality of spread-spectrum signals over a communications channel having fading. The plurality of spread-spectrum signals are radiated by a plurality of...
7899014 Method for determining user channel impulse response in TD-SCDMA system  
The present invention discloses a method for determining user channel impulse response in the TD-SCDMA system, including: setting one or more than one synchronous ID code and establishing...
7899107 Preamble detection using low-complexity cross-correlation  
A system includes a differential demodulation module that differentially demodulates modulated signals. A cross-correlation module generates cross-correlation values by cross-correlating states of...
7894819 Method and system of allocating code resources for high speed physical downlink shared channel  
A method and system of allocating code resources for a high speed physical downlink shared channel are disclosed. The method includes: recording usage states for all code resources of a system at...
7894505 Apparatus and method for selecting effective channel in a multi-user MIMO system  
An apparatus and method for selecting an effective channel in a multi-user MIMO system are provided, in which a receiver receives pilot signals from a transmitter, determines channel information...
7885354 System and method for enhancing near vertical incidence skywave (“NVIS”) communication using space-time coding  
A system and method are described in which space-time coding techniques are used to transmit and receive multiple data streams within a near vertical incidence skywave (“NVIS”) communication...
7881361 Spectrally shaped generalized multitone direct sequence spread spectrum modulation  
A system (10) for communicating a direct sequence spread spectrum signal, a related transmitter (12), a related receiver (14), and methods associated therewith are provided in various embodiments....
7873385 Antenna sharing techniques  
Antenna sharing techniques are described. A mobile computing device may comprise an antenna, a switch to couple to the antenna, and multiple transceivers to couple to the switch. The mobile...
7869526 System and method for a single stage tunable ultra-wideband pulse generator  
The present invention provides a single-stage tunable Ultra-Wideband (UWB) pulse generator, by creating and differentiating a variable edge rate signal. Edge rate variability is introduced by...
7869546 Multicode transmission using Walsh Hadamard transform  
A symbol sequence contained in a received signal comprising a cyclic convolution of a Walsh code multiplexed signal and a channel impulse response of a multipath channel is detected using Walsh...
7869530 Method for suppression of OFDM energy spectral density for minimization of out of band emission or utilization of fractured spectrum  
The Energy spectral density of OFDM signals inherently rolls off slowly. Slow OFDM spectral rolloff has system level implications traditionally mitigated by some combination of the following:...
7864876 Differential space-time block coding apparatus using eight or less transmit antennas  
A differential STBC transmitting/receiving apparatus in a multiple antenna system using eight or less transmit antennas is provided. In the differential STBC transmitting apparatus, a symbol...
7852903 Wireless transmission device, wireless reception device, and symbol arranging method  
A wireless transmission device enabled to improve an error rate performance at a receiver, by acquiring at least one of frequency diversity effect and a time diversity effect while keeping the...
7852959 Method of transmitting control signal in wireless communication system  
A method of transmitting a control signal in a wireless communication system includes allocating a first sequence to spread a first control signal in a radio resource, allocating a second sequence...
7848387 Receiver parametric covariance estimation for transmit diversity  
A parametric form of G-Rake and chip equalization for closed-loop transmit diversity is provided, that accounts for impairment correlation between transmit antennas. In a closed-loop transmit...
7844013 Transmitting apparatus, receiving apparatus, and link adaptation method  
A link adaptation method and others wherein feedback information amount can be reduced. According to this method, a receiving apparatus (100) calculates, based on a channel matrix, a capacity (C)...
7843989 Systems and methods for embedding a first signal in the coding of a second signal  
A method for embedding a first signal in the coding of a second signal is described. A value of the first signal is determined. A codebook based on the value of the first signal is generated. A...
7822147 Self-calibrating multi-port circuit and method  
The invention provides a type-based method to compensate for distortions in circuits operating on a plurality of input modulated signals to form one or more output modulated signals. Steps of the...
7817708 Orthogonal code division multiplex CCK (OCDM-CCK) method and apparatus for high data rate wireless LAN  
Orthogonal Code Division Multiplexing (OCDM) transceiver system with Complementary Code Keying (CCK) and method for baseband OCDM-CCK encoding and decoding are provided. The OCDM-CCK method...
7813412 Radio base station apparatus, and despreading processing apparatus therefor  
The radio base station apparatus includes a first despreading processing circuit for despreading a first control channel (DPCCH) signal; a second despreading processing circuit for despreading...
7813380 Method of processing a signal and apparatus for processing a signal  
A method and apparatus for signal processing which enable data compression and recovery with high transmission efficiency are disclosed. Data coding and entropy coding are performed with...
7809044 Method and apparatus for forward link power control  
A forward link power control mechanism measures the reverse link power control bits which are transmitted on the forward traffic channel. At the remote station, the reverse link power control bits...
7804918 Apparatus for independently extracting streams from hierarchically-modulated signal and performing soft-decision, and method thereof  
An apparatus for independently extracting streams from a hierarchically-modulated signal and performing a soft-decision, and a method thereof are provided. The apparatus includes: a synchronizing...
7801087 Method of transmitting control signals in a digital communications system  
A method is provided by which an information-bearing message may be inferred by the receiver on the basis of which one of the M communication channels was used for transmission.
7796676 Signalling system  
A signalling system is provided which can be used to update the prices of goods which are electronically displayed on supermarket shelves. The signaling system may include a first signalling...
7792179 Arrangement and method for sequence production in a spread spectrum communication system  
An efficient scheme for CDMA coding constructs codes by generating longer code sequences (430) via concatenation, from an existing set of short sequences (410, 420). The sequences may be...
7792207 Communication device with smart antenna using a quality-indication signal  
A mobile communication device may transmit a signal using a plurality of antenna elements, the signals differing by a transmit diversity parameter, e.g., a phase difference. The mobile...
7787519 Preamble transmission method, mobile station, mobile communication system, preamble transmission program and computer data signal  
With the object of efficiently transmitting a variety of different information signals by utilizing the multi-carrier characteristics of Multi-carrier/DS-CDMA, the present invention is...
7787517 Method for transmitting multiple streams in wireless broadcast networks  
Accordingly, a method and apparatus are provided to convert received content into a first stream and a second stream, to transmit said first stream using a first tone and to transmit said second...
7778377 Methods and apparatus for spread spectrum generation using a voltage controlled delay loop  
Methods and apparatus are provided for generating a frequency with a predefined offset from a reference frequency. A spread spectrum generator circuit is disclosed that comprises a voltage...
7769079 Method and apparatus for controlling gain level of a communication channel in a CDMA communication system  
In a code division multiple access communication system (100), a method and an accompanying apparatus provide for an efficient control of a gain level of a communication channel at various...
7760697 Fast and long range node discovery in spread spectrum networks  
A first node seeking entry into a secure spread spectrum communications network sends a discovery burst at a low rate, and sends traffic bursts at a higher rate to exchange data rate for range. A...
7756193 Time divided pilot channel detection processing in WCDMA terminal having shared memory  
A method for operating a Radio Frequency (RF) receiver of a wireless terminal. During a first time interval, an RF front end is enabled and the RF receiver receives and processes an RF signal,...