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7535950 Blind selected mapping techniques for crest factor reduction of forward link CDMA signals  
Disclosed are apparatus that implement blind selected mapping techniques that provide for crest factor reduction of forward link CDMA signals. Communication signals are processed using a...
7535822 Synchronization of remote units for a communication network  
A method for maintaining the quality of transmission from a head end to a service unit in a telecommunications system that uses a multi-carrier transmission scheme with dynamic bandwidth...
7526011 Radio communication system, transmitter, receiver and radio communicating method  
A radio communication system having a radio transmitter and a radio receiver and adopting multiple carrier modulation and code spreading modulation methods is disclosed. The radio communication...
7519104 Application of spreading codes to signals  
A method for applying one or more code values to an input signal value to produce an output signal value in a CDMA communications scheme, wherein the code value or values may lie only either on or...
7519101 Method and apparatus for using empty time slots for spread spectrum encoding  
Communication circuitry uses a combination of Pseudo-Noise (PN) coded and non-PN coded transmission periods to represent different data values. In one embodiment, a number of data values are...
7519103 Pre-phase error correction transmitter  
A CDMA communication system includes a signal processor which encodes voice and nonvoice signals into data at various rates, e.g. data rates of 8 kbps, 16 kbps, 32 kbps, or 64 kbps as I and Q...
7519102 Method of assignment and transmission of spread signals in direct sequence spread spectrum CDMA mobile communication system, mobile communication system, and transmitter, receiver and transmitter/receiver of mobile communication system  
The present invention relates to a spreading signal assigning method and a signal transmitting method in a direct sequence CDMA mobile communication system, a mobile wireless communication system...
7515627 System and method for ultra-wideband (UWB) communication transceiver  
An ultra-wideband (UWB) transceiver for use in UWB communication includes a voltage-controlled oscillator (VCO) configured to periodically and sequentially generate a series of base frequencies...
7512861 Method for determining identity of simultaneous events and applications to image sensing and A/D conversion  
A method of encoding identity of events comprises: receiving an event bit pattern having bits representative of events, and determining a code from the event bit pattern, said code containing the...
7508860 Pulse signal generator for ultra-wideband radio transception and radio transceiver having the same  
Provided are a pulse signal generator for UWB radio transception and a radio transceiver having the same. The pulse signal generator includes: an envelope generator generating a plurality of...
7496145 Method and apparatus for reducing transmitter peak power requirements with orthogonal code noise shaping  
A method and apparatus for reducing peak transmitter power includes providing a set of orthogonal communication codes for a telecommunications system that includes a set of active user codes and a...
7480266 Interference adaptation apparatus, systems, and methods  
Apparatus and systems, as well as methods and articles, may operate to detect radio-frequency energy at a frequency associated with at least one wireless networking channel and to transmit a data...
7480236 Multipoint-to-point communication using orthgonal frequency division multiplexing and identification codes  
Systems for multipoint-to-point communication using orthogonal frequency division multiplexing and identification codes are provided. In one embodiment, a system comprises: a host unit; and a...
7474688 System and method for detecting multiple direct sequence spread spectrum signals using a multi-mode searcher  
System and method for detecting multiple direct sequence spread spectrum signals using a multi-mode searcher. A preferred embodiment comprises the specification of a hypothesis for a particular...
7471657 Method and apparatus for processing a punctured pilot channel  
The punctured pilot channel comprises information symbols of uncertain sign punctured into a sequence of pilot channel symbols of predetermined sign. The apparatus includes an information sign...
7471736 Frequency based modulator compensation  
In a transmitter, an upconverter converts a lower frequency signal to a higher frequency signal. Prior to the upconversion, a compensator compensates for at least gain/phase distortion that will...
7469124 Rate adaptive satellite communications  
A system and method for transmitting data from a satellite to a terrestrial receiving station are provided. The system comprises a satellite including a rate adaptive data receiver. The system is...
7457371 Transmission signal generating circuit and radio base station communication apparatus using the same  
A transmission signal generating circuit in a radio base station that employs spread processing circuits in order to output spread transmission signals. The signal generating circuit further...
7447270 Method for controlling the data signal weighting in multi-element transceivers and corresponding devices and telecommunications network  
The invention relates to a method for controlling the weighting of a data signal in the at least two antenna elements of a multi-element transceiver 1 of a telecommunications network, which data...
7440492 Interference canceller for CDMA mobile stations  
Parallel interference cancellers are connected in successive stages. In each canceller, multiple signal paths are provided for interference replica estimators to receive multiple CDMA channels. A...
7440487 Method and system of transmitting words representing transmission parameters respectively allocated to mobile stations communicating with a base station in a mobile communication system  
Method for transmitting a word representative of transmission parameters respectively allocated to the mobile stations in communication with a base station of a mobile telecommunication system,...
7437161 Method of fast data transmission of mobile stations via the same base station  
In the method of packet transmission, data packet fragments received from a first mobile station are sent to a second mobile station without assembling and re-fragmenting the received data packet...
7433382 Spread spectrum based multichannel modulation for ultra wideband communications  
A spread spectrum based multichannel modulation Ultra-Wideband (UWB) communication transceiver for indoor wireless operations is presented according to some embodiments. The spread spectrum based...
7430232 Method and system for broadcasting a programme  
Method and apparatuses for broadcasting and receiving a programme are presented. A programme is broadcast from a broadcasting system. Broadcast programme-associated data is transferred from a...
7426177 Round trip delay adjustment in multipoint-to-point communication using orthogonal frequency division multiplexing  
Systems and methods for bidirectional communication are provided. In one embodiment, a method for aligning communications from a plurality of remote units in a multipoint-to-point orthogonal...
7424046 Spread spectrum clock signal generation system and method  
A system and method for generating a clock signal having spread spectrum modulation. The method involves generating a clock signal by generating edge positions for edges of the clock signal from a...
7424009 Method of mapping chips of a spread out symbol to sub-channels of a multi-carrier transmission network  
The present invention concerns a method of mapping chips of a spread out symbol to sub-channels of a group of sub-channels of a Multi-Carrier transmission channel of a Multi-Carrier transmission...
7420506 Cumulant-based discriminator for GNSS code alignment  
Systems and methods for a cumulant-based discriminator for global navigation satellite system code alignment are provided. In one embodiment, a method for determining a misalignment between a GNSS...
7418028 Agile RF band OFDM spread spectrum and cross-correlated systems  
Agile Radio Frequency (RF) band selectable systems and circuits process and provide selection of baseband filtered Orthogonal Frequency Division Multiplexed (OFDM) modulated signals, of spread...
7418027 Method and apparatus for ultra wideband communications system employing a spread spectrum technique transmitting a baseband signal over a wide frequency band  
A transmitter for ultra wideband communications includes a spread modulator for spreading input data to a wideband signal having a form in which a plurality of carriers are constantly transmitted...
7415060 Spread spectrum communication system  
Techniques and systems for estimating the spreading factor of data in a channel in a spread spectrum radio communication system is described. An illustrative method includes communication between...
7411995 Apparatus and related methods to aid in system identification in a heterogeneous communication system environment  
An apparatus and associated methods to aid in system identification in a heterogeneous communication environment is generally described herein.
7408975 Transmit power adaptation for CDMA communication systems using successive interference cancellation  
Transmit power adaptation for DS/CDMA systems is disclosed for a CDMA system that utilizes a successive interference cancellation receiver on fading channels. The transmission power is adapted in...
7403747 Tuning a station  
A method of tuning a station is disclosed, wherein a first pilot signal is applied on a circuit of the station and the resulting output power of the signal circuit is subsequently detected. A...
7397859 Multi-carrier communication systems employing variable symbol rates and number of carriers  
A multi-carrier communication system such as an OFDM or DMT system has nodes which are allowed to dynamically change their receive and transmit symbol rates, and the number of carriers within...
7397839 OFDM communication system and method  
A transmitter used in a wireless communication system based on an orthogonal frequency division multiplexing (OFDM) scheme includes a determination unit that determines a spreading factor and an...
RE40385 Orthogonal complex spreading method for multichannel and apparatus thereof  
An orthogonal complex spreading method for a multichannel and an apparatus thereof are disclosed. The method includes the steps of complex-summing αn1WM,n1Xn1 which is obtained by multiplying an...
7388899 Spreading code structure for ultra wide band communications  
The ultra wide band communication system of the present invention includes a transmitter (station) and a receiver (station). The transmitter and the receiver employ spreading code comprised of...
7386031 Mulitcarrier CDMA transmission system and transmission method  
In multicarrier transmission for multiplying transmit data individually by each code constituting orthogonal codes and transmitting each result of multiplication by a prescribed subcarrier, a...
7386026 Method and system for synchronizing and selectively addressing multiple receivers in a wireless, spread spectrum communication system  
A system and method for synchronizing and selectively addressing multiple receivers in a wireless communication system includes a spread spectrum transmitter and one or more spread spectrum...
7382822 Code acquisition device and method using two-step search process in DS-CDMA UWB modem  
There is provided a code acquisition device and method using a two-step search process in a DS-CDMA UWB modem. The device includes: an I/Q channel symbol generating unit for, generating a...
7376173 Unambiguously encoding and decoding signals for wireless channels  
A method encodes a sequence of blocks of input bits to be transmitted over a wireless channel. Each block of input bits is converted to a codeword, and each codeword is mapped to multiple...
7369599 Method and apparatus for reducing code phase search space  
A GPS communication system including a server and a client, each including a GPS receiver, for reducing the code phase search space of the GPS receiver of the client. The communication system...
7366226 Pilot channel tracking method based on multipath barycenter tracking loop  
The present invention discloses a method for pilot channel tracking based on multipath channel barycenter tracking loop, comprises steps of evaluating multipath fading channel parameters,...
7359678 Signal processing semiconductor integrated circuit device and wireless communication system  
The invention provides a signal processing semiconductor integrated circuit of the direct conversion system, which includes a dummy amplifier having the same circuit configuration as a low noise...
7359428 VDSL transmission employing multi-code multi carrier CDMA modulation  
An improved transmission method for high-rate digital communication on unshielded twisted copper pairs for Very-High Speed Digital Subscriber Loop (VDSL) modems. The new modulation scheme is a...
7359427 Rach ramp-up acknowledgement  
An improvement to a code-division-multiple-access (CDMA) system employing spread-spectrum modulation, with the CDMA system having a base station (BS) and a plurality of remote stations. The base...
7356094 Digital broadcast receiving apparatus  
A digital broadcast receiving apparatus for receiving a broadcast signal generated by combining sub signals modulated using a random sequence generated based on an initial value set in accordance...
7346094 System and method for transmitting data and additional information simultaneously within a wire based communication system  
A system and method is provided for transmitting data signals and additional information signals having partially overlapping frequency bands simultaneously within a wire based communication...
RE40111 Wireless alarm system  
A remote power meter monitoring system using spread spectrum transmitters, fast frequency shift keying, spread spectrum receivers and a computer. The spread spectrum transmitter uses a chip code...