Matches 1 - 50 out of 141 1 2 3 >
Match Document Document Title
7403470 Communications system, methods and apparatus  
An OFDM wireless communications system includes terrestrial and satellite based base stations. Mobile nodes support two uplink modes of operation, multi-tone mode for terrestrial station...
7397785 Method for enhancing fairness and performance in a multihop ad hoc network and corresponding system  
A method for enhancing the fairness and performance in a multihop ad hoc network, the method usually including providing contention synchronization information regarding a transmission between...
7391712 Method and system for forward-looking tone allocation  
Methods and systems for forward-looking tone allocation are provided. In one embodiment, a method for an orthogonal frequency division multiplexing (OFDM) multipoint-to-point communications system...
7391711 Method and system for adaptive modulation  
Methods and systems for adaptive modulation are provided. In one embodiment, a method for a plurality of remote units of an orthogonal frequency division multiplexing multipoint-to-point...
7379445 Platform noise mitigation in OFDM receivers  
Techniques and structures are presented for use in mitigating the effects of platform noise within a wireless device.
7376117 Interleaving circuit for a multiband OFDM transceiver  
Interleaving circuit for a multiband OFDM (orthogonal frequency division multiplexing) transceiver of a ultra wide band wireless personal access network transmitting OFDM modulated symbols, wherein...
7373085 Hybrid satellite and fiber communications system  
A communication system employing optical fibers and a high data rate satellite is utilized to provide high-speed Internet access to various geographic regions. In one aspect, a first teleport...
7372897 Portable information communication terminal, program, and recording medium  
The number of times for averaging operation for averaging a correlation value of a received signal and a reference signal is properly controlled. When the correlation value is not averaged, since a...
7372893 Device and method for compensating for phase distortion in base station of OFDMA-based cellular system  
Disclosed is a device and method for compensating for phase distortions in a base station of an OFDMA-based cellular system. The method comprises receiving OFDM symbols from a plurality of mobile...
7372830 Dynamic subchannel and bit allocation in a multiuser-MIMO/OFDMA system  
A resource allocation method in a multiuser-multiple-input multiple-output/orthogonal frequency division multiple access (MIMO/OFDMA) system. In the multiuser-MIMO/OFDMA system feedback information...
7369877 Multi-channel demodulation with blind digital beamforming  
A system and method for receiving communication signals is provided. According to the method, a plurality of communication signals is received, each communication signal comprising one or more...
7369531 Apparatus and method for transmitting/receiving a pilot signal for distinguishing a base station in a communication system using an OFDM scheme  
A method for transmitting reference signals in a radio communication system in which a frequency band is divided into a plurality of sub-frequency bands. The reference signals are transmitted...
7355992 Relay for extended range point-to-point wireless packetized data communication system  
A limited acknowledgement-based communication methodology increases the throughput efficiency of a relay-based, extended range, wireless packetized data transmissions to a data-reception site from...
7355991 Method and apparatus for message flooding within a communication system  
A method and apparatus for message flooding is provided that takes advantage of the availability of node locations. The transmission of a flood message by a node is based on location information of...
7352800 Method of partial parallel interference cancellation  
A method of Partial Parallel Interference Cancellation (PPIC) is provided for recursively eliminating the Multiple Access Interference from a received signal. Such method is to use a recursion way...
7333422 Optimized FFT/IFFT module  
The present invention discloses an optimal hardware implementation of the FFT/IFFT operation that minimizes the number of clock cycles required to compute the FFT/IFFT while at the same time...
7324604 System and method for shaping ultra wide bandwidth signal spectrum  
A method and system shapes a spectrum of an impulse radio signal, such as an UWB signal. First, basis pulses at various frequencies and pseudo-random delays are generated. The generated set of...
7319683 Radio base station, control method therefor, and program recording medium  
In a radio base station ( 100 ) that communicates with a mobile station according to the PHS standards, a reception timing detection unit ( 55 ) measures the time when a UW signal of a signal...
7313109 Method and system for selective usage of broadband forward link  
A radio access network has a reverse link frequency band for receiving signals from mobile stations and has first and second forward link frequency bands for transmitting signals to mobile...
7301893 Linear space-time block code with block STTD structure  
Space-time block code with structure of a block STTD. 2×2 blocks allow partial orthogonality for low-complexity detection and optimized diversity gain and coding gain.
7283510 Wireless receiver estimating power of interference  
By providing a interference power estimation unit obtaining the power of interference in a common pilot signal with ten symbols in one slot and outputting the power of interference as the estimate...
7242961 Channel reciprocity matrix determination in a wireless MIMO communication system  
Operating a wireless MIMO system to determine forward and reverse channel reciprocity matrices relating a first wireless MIMO device and a second wireless MIMO device of the wireless MIMO system...
7239620 System and method for facilitating network-to-network transitions  
A system and method for facilitating network-to-network transitions of mobile stations comprising includes at least one access point ( 204 ). At least one receiver ( 202, 224 or 230 ) is coupled...
7215652 Method, apparatus, and system for calculating and making a synchronous burst time plan in a communication network  
A communication network control method for a communication network including a hub and a plurality of user nodes includes adjusting system parameters to maximize communication data rate and...
7190689 Retransmission control method and apparatus for use in OFDM radio communication system  
A retransmission control apparatus for use in a radio communication system that uses an orthogonal frequency division multiplexing technique, the apparatus comprising a transmitter which transmits...
7180917 Method and apparatus for employing stored content at receivers to improve efficiency of broadcast system bandwidth use  
The invention relates generally to a receiver unit in a digital broadcast system for receiving a broadcast signal comprising content segments and control data, and generating an output signal using...
7177666 Access network for mobile telecommunications and method for developing radio coverage  
A telecommunications network for mobile phone users comprising a user subsystem and a transport subsystem associated by means of an access subsystem, which connect to them respectively through a...
7167716 Synchronous demodulation apparatus of base transceiver station in interim standard-2000 system  
The present invention provides a synchronous demodulation apparatus of a base transceiver station in an Interim Standard-2000 (IS-2000) system, including a first synchronous demodulation unit, a...
7158489 Data transmission in a TDMA system  
In TDMA systems it is possible to transmit data on more than one consecutive slot per frame. This introduces increased workloads on the power amplifier of the transmitter of the mobile station. To...
7139582 Method for the continuous real time tracking of the position of at least one mobile object as well as an associated device  
In a method for the continuous real time tracking of the position of at least one mobile object in a defined multidimensional space, at least one mobile transmitter module is attached to at least...
7130355 Amelioration in inter-carrier interference in OFDM  
In an environment where the transmission medium leading to the receiver is time-variant within a block of received signals, and where transmission medium has an finite impulse response extending...
7110387 System and method for compensating timing error using pilot symbol in OFDM/CDMA communication system  
A timing error compensation system in an OFMD/CDMA communication system includes an analog-to-digital converter for converting an OFDM signal, comprised of a data symbol stream in which a pilot...
7079480 Enhancing security and efficiency of wireless communications through structural embedding  
By embedding as a Physical Layer (PHY) Appliqué patterns (time, frequency, tone multiplexed, control signal, explicit network authentication, projective, other, or combined) on wireless electronic...
7047043 Multi-channel demodulation with blind digital beamforming  
A communication signal receiver and associated method are disclosed. A plurality of communication signals are received at an atenna array and time multiplexed into a single multiplexed signal. Each...
7031272 Satellite direct radio broadcast system  
A satellite direct audio broadcast system includes a plurality of fixed-rate, uniform, frequency division multiple access (“FDMA”) uplinks and a time division multiplexed (“TDM”) downlink....
7027989 Method and apparatus for transmitting real-time data in multi-access systems  
The invention provides a method and apparatus for transmitting real-time data in a multi-access system which eliminates clipping of the data while reducing transmission delays. The invention can be...
7009959 Multiple access communication system  
The multiple access communication system according to the invention comprises at least one primary station ( 2 ) and a plurality of secondary stations ( 32, 34, 36 ). The primary station ( 2 ) and...
7006462 Satellite communication system and routing method using the same  
In a satellite communication system, an address adding portion 22 adds communication data with Next Hop address read out from a routing table portion 21 . A line controller 31 judges whether a...
6950387 Communication method, system, and apparatus that combines aspects of cyclic prefix and zero padding techniques  
The present invention provides communication methods, systems, and apparatuses. Methods are provided in which a second signal for transmission is obtained by halving values of an initial portion...
6940894 Power estimation using weighted sum of pilot and non-pilot symbols  
In one embodiment, the invention is directed toward methods for estimating the power of a received signal encoded with both pilot and non-pilot symbols. The method may include separately...
6925066 Methods and apparatus for design, adjustment or operation of wireless networks using multi-stage optimization  
Techniques for use in designing, adjusting or operating a wireless network so as to provide a desired level of performance for the network. An optimization process is applied to a set of...
6891898 System and method for recovering symbol timing offset and carrier frequency error in an OFDM digital audio broadcast system  
The system for recovering symbol timing offset and carrier frequency error from an orthogonal frequency division multiplexed (OFDM) signal includes a receiver circuit for receiving an OFDM...
6891814 MF-TDMA telecommunication system and a terminal therefor  
A multiple frequency time division multiple access digital telecommunication system, in particular a transparent satellite telecommunication system, includes terminals and a base station. Calls can...
6885649 Method of multiuser detection with user equipment  
A method of using a user equipment (UE) in a wireless time division duplex communication system. Each communication burst has a unique channelization code and a midamble code which is uniquely...
6859655 TDD FDD air interface  
Downlink and uplink frequencies in a wireless access system are time-shared by adjacent sectors, but remain dedicated to downlink or uplink transmission and may utilize FDD-only bandwidth within...
6842476 Co-channel interference canceller  
A method and apparatus for processing a received signal containing a desired burst and a co-channel interferer burst are disclosed. The invention includes receiving the received signal from a front...
6839614 Multi-mode in-vehicle control unit with network selectivity for transmitting vehicle data for fleet management  
A multi-mode in-vehicle control unit (ICU) contains a plurality of modems. Each modem allows the multi-mode ICU to transmit vehicle data over a different kind of transmission network. Exemplary...
6785300 Delay compensation  
In a discrete tone system, a base station receives a transmission burst from a remote unit being installed that includes delay compensation pilot tones that are uniformly spread throughout the...
6781968 Wireless communication system, apparatus and method using an atmospheric platform having a wideband trunkline  
A system, apparatus and method provide wireless communications to a geographical area. The system includes at least one atmospheric platform serving as a central relay or node using a star network...
6779038 System and method for extending virtual synchrony to wide area networks  
A virtual synchrony wide area network ( 100 ) which has at least a first local area network (LAN) ( 110 ) and a second LAN ( 120 ). A first router ( 114 ) and a second router ( 116 ) are connected...
Matches 1 - 50 out of 141 1 2 3 >