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7620098 Enhanced method for demodulating constant-amplitude multi-code biorthogonal modulation signals  
Disclosed is a demodulation method for enhancing decoding performance of information bits in a constant-amplitude multi-code biorthogonal modulation communication system, which performs encoding to...
7599309 Method and apparatus for managing cell-by-cell demodulation timings of a user equipment in an asynchronous mobile telecommunication system  
A method and an apparatus are provided for managing cell-by-cell demodulation timing of an asynchronous user equipment (UE) for demodulating multipath signals, received from a plurality of cells,...
7596105 User equipment for synchronizing to a TDD base station  
A time division duplex (TDD) user equipment (UE) is configured to synchronize to a TDD base station. The UE includes a receiver configured to receive a primary synchronization code along with a...
7596082 Method and apparatus for Walsh space assignment in a communication system  
Techniques for Walsh space assignment are disclosed. In one aspect, a list of Walsh functions is maintained in the base station and mobile stations. A Walsh space indicator is transmitted to...
7590045 Apparatus and method for transmitting fast feedback information in a wireless communication system  
An apparatus is provided for transmitting uplink fast feedback information in a wireless communication system. In the apparatus, a channel encoder generates uplink fast feedback information to...
7586836 Apparatus and method for transmitting/receiving pilot signals in a communication system using an orthogonal frequency division multiplexing scheme  
Disclosed is a method for providing a pilot symbol for base station identification in a Multiple-Input Multiple-Output (MIMO) communication system having one or more transmission antennas, wherein...
7586835 Apparatus for generating 2D spreading code and method for the same  
An apparatus for generating a 2D spreading code and method for the same are proposed. The apparatus for generating the 2D spreading code includes a column counter, a row counter, a codeword...
7583630 Method and system for providing mobile station control of data transmission rates in a wireless network  
A method for providing mobile station control of data transmission rates in the wireless network is provided. The method includes transmitting data transmission rate (DTR) data from a base station...
7583586 Apparatus and method for transmitting/receiving pilot signal in communication system using OFDM scheme  
Disclosed is a method for transmitting a reference signal for identification of each cell in a communication system including a plurality of cells each of which is identified by a cell identifier....
7580451 Decoding of Walsh codes  
Methods, systems, devices, and computer program products for decoding of Walsh codewords are disclosed.
7580400 Apparatus and method for generating preamble signal for cell identification in an orthogonal frequency division multiplexing system  
Disclosed are an apparatus and a method for generating a preamble signal for cell identification in an OFDM mobile communication system. The method includes the steps of generating a Walsh code...
7577216 Guard interval and FFT mode detector in DVB-T receiver  
For determining FFT and GI (guard interval) modes within a receiver, a correlation signal is generated from an in-phase and quadrature (I/Q) stream. An plurality of GI mode division signals are...
7577120 Allocation of power and channelization codes for data transfers  
A method of communication includes assigning at least one channelization code to a data packet. A portion of power available for communicating is assigned to the channelization code based on a...
7573805 Data transmission and reception method and apparatus  
A datastream of bits (which may itself be comprised of a plurality of datastreams as derived from a plurality of sources) are coded ( 21 ) and then interleaved ( 12 ) across a plurality of...
7555034 Apparatus and method for detecting timing error based on cyclic correlation  
Provided is an apparatus and method for detecting timing errors based on characteristics of cyclic correlation. The apparatus and method can detect the timing errors of many users by using the...
7551582 System and method for optimizing walsh code assignments  
A wireless communication system is disclosed, including a network and a plurality of base stations coupled to the network, wherein each of the base stations are adapted to transmit only a Pilot...
7548509 Acknowledging broadcast transmissions  
Methods and apparatus are presented for acknowledging broadcast transmissions. An acknowledgment channel is designed for acknowledging the success or failure of a transmission on a dedicated...
7542408 Method of reducing inter-subcarrier interference in multicarrier communication systems and receiver using it  
A receiver of a multicarrier communication system capable of reducing inter-subcarrier interfering signals is to be provided. Receive signals received by a receiving antenna are amplified by a...
7532563 Mechanism to improve quality of channel estimates in OFDM transmissions  
An OFDM (Orthogonal Frequency Division Multiplexing) system may utilize pilot symbol structures including two or more pilot symbols with pilot information on alternate tones. The pilot information...
7519123 Spectral shaping for multiband OFDM transmitters with time spreading  
A method of shaping an orthogonal frequency division multiplexing (OFDM) signal spectrum of a transmitted signal is disclosed. An input signal including an input component is received and a first...
7505440 Method and apparatus for orthogonally overlaying variable chip rate spread spectrum signals  
A system and method for transmitting wideband signals via a radio communication system adapted for transmitting narrow-band signals is described. A base station is used to transmit and receive a...
7499391 Apparatus and method for allocating walsh codes to mobile stations in an adaptive antenna array wireless network  
An apparatus for allocating orthogonal codes to mobile stations for use in a CDMA base station that transmits using an adaptive antenna array. The apparatus comprises a database for storing R...
7496132 Pilot signals for synchronization and/or channel estimation  
The frame words of the embodiments are suitable for frame synchronization and/or channel estimation. By adding the autocorrelation and/or cross-correlation functions of frame words, double maximum...
7489664 Method and apparatus for transmitting and receiving orthogonal code index information in a mobile communication system  
A method and apparatus for transmitting and receiving between MSs and a BS orthogonal code index information indicating orthogonal codes available to the MSs in a mobile communication system...
7489621 Adaptive puncturing technique for multicarrier systems  
Various embodiments are described for adaptive puncturing techniques involving an adaptive bit loading block to select a modulation scheme and a puncturing pattern for each of a plurality of...
7483490 Method for transmitting wideband signals via a communication system adapted for narrow-band signal transmission  
A communication system is used to transmit and receive data on a plurality of relatively narrow-band signals and wideband signals. The two signal types share a common electromagnetic spectrum by...
7480279 Apparatus and method for transmitting a control message on a packet data control channel in a mobile communication system supporting a packet data service  
An apparatus and method for transmitting Walsh information over a packet data control channel in a base station of a mobile communication system that transmits packet data and has the packet data...
7480260 Method and apparatus for implementing a presence-based universal camp-on feature in packet-based telephony systems  
A method and apparatus for implementing a presence based universal camp-on feature in packet-based telephony systems are disclosed. A first packet-based device is subscribed to a line status of a...
7471932 System and method for embedding OFDM in CDMA systems  
Systems and methods of combining OFDM and CDMA signals are provided. An OFDM packet data channel is overlaid over CDMA transmissions. The channel is scheduled slotwise between multiple users. In...
7471622 Method of transferring and/or receiving data in communication system and apparatus thereof  
The present invention relates to Walsh Code Allocation (WCA) field in the Packet Data Control Channel. One of the embodiments of the WCA field is use of the WCA field as Last Walsh Code Index...
7460506 Apparatus and method for transmitting and receiving a cell identification code in a mobile communication system  
An apparatus and method for generating an octal code for identifying cells in a mobile communication system. In the octal code generating apparatus, a binary code generator generates a binary code...
RE40518 Channel assignment method for a base station in a mobile communication system  
There is disclosed a method for performing channel assignment in a base station for a mobile communication system. Upon receipt of a request for assigning a channel to a mobile station, a base...
7426400 Wireless telecommunications overlay system  
A wireless communication system includes first and second communication systems and a controller. The first communication system receives a first control signal indicating a first power level and...
7424039 Method and apparatus for processing multiple common frequency signals through a single cable  
A method and apparatus for processing multiple signals at a common frequency fed through a single radio frequency (RF) cable with or without one or more amplifiers and utilized for either forward...
7411899 Apparatus and method for allocating walsh codes to access terminals in an adaptive antenna array CDMA wireless network  
An apparatus having: 1) a database for storing R active wireless terminal records, each of the R active wireless terminal records containing: a) an active orthogonal code and b) corresponding...
7400614 Methods and apparatus for downlink diversity in CDMA using Walsh codes  
Downlink diversity in a CDMA system is provided by employing Walsh codes in conjunction with M transmit antennas at a common base station serving K mobiles, where M may or may not be to equal to K....
7394793 Method and apparatus for generating preambles in a broadband wireless communication system using multiple antennas  
A preamble generation method and apparatus are provided for improving transmit diversity by changing a preamble structure in a broadband wireless communication system using multiple antennas based...
7369486 Apparatus and method for increasing channel capacity of a mobile communication system  
An apparatus for increasing channel capacity in a mobile communication system using a hybrid phase shift keying (HPSK) modulation method. The method includes a walsh code control unit for checking...
7352713 Multiplexed signal quality display system, method, and program, and storage medium storing the program  
A multiplexed signal quality display system, method, and program, and recorded medium where the program is recorded. The invention measures the quality of a multiplexed signal from a communication...
7349421 Method and apparatus for assigning spreading codes  
A method is taught for transmitting message signals in a communication system having a new call entering the communication system and Walsh codes that can be active and inactive. The method...
7333469 Method for deep paging  
A method for compensating for the Doppler effect in a communication system where messages are transmitted at a low data rate to a user terminal that is inside a building. The method comprising...
7324436 Determining useable combinations of variables for transmitting a subpacket of an encoder packet  
A method of determining useable combinations of variables for transmitting a subpacket of an encoder packet in a communication system is disclosed. First, an arbitrary combination from a plurality...
7321610 Method and system of interference cancellation in multi-cell CDMA systems  
In signal detection system and method implemented to reduce the effects of interference in multi-user detection systems, a receiver defines a frame of symbols containing at least one window based...
7308019 System and method for Fast Walsh Transform processing in a multi-coded signal environment  
A flexible Fast Walsh Transform circuit provides configurable FWT sizes, and is suitable for use in radio receivers where the received signal may be generated using varying spreading codes and/or...
7302025 Efficient joint equalization/decoding method and apparatus for Complementary-Code-Keying based systems  
An efficient approach to generating the bias resulting during the joint equalization/decoding of a Complementary-Code-Keying (CCK) based system is provided that includes a bias generator system...
7302020 Encoded multi-access bus system and method  
A bus system includes multiple devices and a bus. The bus is connected to each device. Each device may include a type of input/output (I/O) device, such as a random access memory (RAM) or a...
7301892 Walsh mask test in CDMA cellular wireless communication systems with packet data service  
A mobile station comprising a decoder circuit and a control circuit. The decoder circuit may be configured to retrieve mask information from a packet data control channel. The control circuit may...
7277382 Hybrid walsh encoder and decoder for CDMA  
The invention provides a method and system for the generation of Hybrid Walsh orthogonal codes for CDMA spreading and channelization encoding and fast decoding. Current art uses real Walsh...
7272110 Method of allocating walsh code resource  
The present invention relates to a mobile communication system, and more particularly, to a method of allocating a Walsh code resource. The present invention includes determining an available...
7248698 System for generating pseudorandom sequences  
A system for generating pseudorandom codes using a register which contains an identification of the code tree leg of the desired code and a counter which outputs a successive binary sequence. The...
Matches 1 - 50 out of 205 1 2 3 4 5 >