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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 their...
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...
7391806 Digital data exchange device in a CDMA system  
The invention relates to a device for exchanging digital data between several sources and at least one hub in a CDMA system, characterized in that it comprises a number n of digital...
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 α n1 W M,n1 X n1 which is obtained by...
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 code...
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 plurality...
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 system...
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...
7336697 Code division multiple access mobile communication system  
A code division multiple access (CDMA) mobile communication system with improvements to permit stable reception with a minimum of bit error. The system includes a base station and a mobile station...
7330496 System and method for spread spectrum communication  
A spreading code generating apparatus carries out M-sequence multiplication and zero value addition of generated orthogonal codes to obtain channel identification codes, and then carries out...
7327779 Method and apparatus for high-speed software reconfigurable code division multiple access communication  
A communication device for W-CDMA signal transmission and reception includes a W-CDMA transmitter having at least one of a RAM and registers, a W-CDMA receiver having at least one of a RAM and...
7327778 Multi-mok modulation/demodulation transmission process, corresponding transmitter and receiver  
A method and an apparatus for transmitting data using multi-MOK modulation/demodulation transmission process corresponding to transmitter and receiver are disclosed. At transmission, the data to be...
7324580 Method and apparatus for achieving channel variability in spread spectrum communication systems  
A method and apparatus are disclosed for modulating a communication signal in a CDMA environment using orthogonal N by N Hadamard spread spectrum codes. Orthogonal spreading codes are used that...
7321635 Linearization of amplifiers using baseband detection and non-baseband pre-distortion  
In an amplifier system that linearizes an amplifier by pre-distorting the input signal prior to amplification, a baseband pre-distortion processor processes the input signal in a digital baseband...
RE39954 Automobile on-board and/or portable telephone system  
In an automobile on-board and/or portable telephone system capable of increasing the capacity of subscribers easily on the basis of changing of the information transmission bit rate, spread codes...
7313164 Method and system for switching and detecting PN codes for fast acquisition of burst signal  
A method and system is disclosed for generating and detecting variable sequence PN codes. PN-Code sequence changes based on varying interceptor threat levels are generated at a rate fast enough to...
7310364 Multirate, constant envelope, constant bandwidth, modulation, channelization and detection system based on orthogonal bipolar spreading vectors  
A modulation channelization and demodulation system based on orthogonal bipolar spreading vectors is provided that permits a variable information rate to be transmitted without inducing envelope...
7308018 Method for operating a digital mobile radio network with space-time block codes  
The invention relates to the preparation and numerical optimization of non-linear space-time block codes for application in a digital mobile radio system, with a maximum transmission diversity for...
7301988 Enhanced uplink packet transfer  
An enhanced spread-spectrum uplink technique provides more efficient packet transfer in a wireless network. A mobile station requests to utilize an uplink channel, typically, a physical dedicated...
7286590 Method for the transmission of data, and apparatus for the transmission of data  
A method and a system are described for the transmission of data between one base station and several mobile stations via radio channels, the data streams each differing in terms of a code. In a...
7280593 Method and system for sample and reconstruction synchronization for digital transmission of analog modem signal  
A method and system for the synchronization of the transmission of digitally converted analog modem signals between two or more modems using either RF over-the-air or A/C power line communication...
7280581 Method of adaptive Walsh code allocation  
A method of adaptive Walsh code allocation in a wireless communication system. The method includes the step of each voice user transmitting quality condition signal, such as a pilot signal strength...
7277458 Apparatus and method for tracking a phase of a pseudo-random noise (PN) sequence of a pilot signal in a mobile terminal  
An apparatus and method are disclosed for acquiring by a mobile terminal a pseudo-random noise (PN) sequence of a pilot signal received from a base station by means of a searcher, designating a...
7274681 Method of multiplexing information in mobile communications, method and apparatus for decoding transport format combination indicator, and mobile station apparatus, base station apparatus and mobile communication system  
Control information, which is transmitted through a circuit different from the one used for the transmission of a plurality of pieces of information to be multiplexed, is analyzed. When the...
7272163 Method for two-level variable chip rate spreading and despreading used in CDMA system  
This invention involves a two-level variable chip rate spreading and despreading method used in CDMA systems. The total spreading gain is the product of the two level spreading factors. Orthogonal...
7269207 Method of symbol index selection in code division multiple access  
A method and device for estimating a target chip index value in a code-division multiple access receiver. The receiver receives signals from a transmitter that uses a plurality of transmitted chips...
7254159 High-frequency wireless peripheral device with auto-connection and auto-synchronization  
A system and method for the automatic establishment of a connection between a human interface device and a host transceiver unit, wherein the system includes a host transceiver unit configured to...
7245650 CDMA communications system using multiple spreading sequences  
This invention provides techniques for a CDMA system having high spectrum efficiency with low transmit power. Each transmitter comprises means of selecting some core-sequences out of multiple...
7239659 Method and apparatus for channel feedback  
A method for communicating channel estimates on a plurality of subcarriers between a transmitting device and a receiving device. The transmitting device determines a channel estimates on a...
7236747 Increasing OFDM transmit power via reduction in pilot tone  
Transmitting an ultra wideband (UWB) signal in some embodiments comprises reducing power within a first sub-band with respect to a nominal power of the UWB signal within the first sub-band and...
7228107 Paging indicator deciding method of mobile communication terminal  
A paging indicator deciding method of a mobile communication terminal in which a threshold value for deciding a paging indicator is variably set according to a SNR of a pilot channel. If the SNR of...
7224715 Method and system for maximum likelihood clock and carrier recovery in a direct sequence spread spectrum communication system  
The present invention provides a method and system for clock and carrier recovery in a direct sequence spread spectrum communication system. The process involves the receiver receiving a digital...
7200368 Transmit diversity method and system  
The present invention relates to a method and system for transmitting in a wireless communication system, a transmission signal divided into at least two signal parts by using transmission beams of...
7194019 Multi-pulse multi-delay (MPMD) multiple access modulation for UWB  
A new modulation scheme in UWB communications is introduced. This modulation technique utilizes multiple orthogonal transmitted-reference pulses for UWB channelization. The proposed UWB receiver...
7187730 Method and apparatus for predicting CCK subsymbols  
An apparatus and a method for symbol decoding of baseband data in a wireless communications network is disclosed, and specifically CCK subsymbol prediction and symbol demodulation that occurs at...
7187706 Handoff and source congestion avoidance spread-spectrum system and method  
A spread-spectrum, code-division-multiple-access (CDMA), system with a remote station (RS) communicating with a first base station (BS). The remote station receives the first BS-packet signal, and...
7184715 ***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
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...
7181170 Apparatus and method for adaptive broadcast transmission  
An apparatus and method for adaptive broadcast transmission. A broadcast transmission can be received. Insufficiency of a broadcast channel quality can be determined. A negative acknowledgement...
7180873 Spread spectrum code division destination access (SS-CDDA) for satellite communication system with distributed gateways  
A code division multiplexing system for a link between components of a satellite communications system is disclosed where, using spread spectrum techniques, channel blocks are each spread by a...
7167503 Distributed spread-spectrum network  
A distributed spread-spectrum network, comprising remote stations and nodes. One or more hub node(s) connect(s) to a central telephone office. A node's spread-spectrum transceiver communicates,...
Matches 1 - 50 out of 429 1 2 3 4 5 6 7 8 9 >