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Class Information
Number: 370/203
Name: Multiplex communications > Generalized orthogonal or special mathematical techniques
Description: Subject matter wherein (a) a multiplexed channel is uniquely identified and separated from other multiplexed channels by members of a pair of mathematical functions having a sum of products or having an integral that is zero or sometimes one under specified conditions, or (b) particular mathematical processes are used to achieve multiplexing techniques.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7620098 |
Enhanced method for demodulating constant-amplitude multi-code biorthogonal modulation signals |
Nov. 17, 2009 |
| 7616553 |
Apparatus and method for clock synchronization in a multi-point OFDM/DMT digital communications system |
Nov. 10, 2009 |
| 7616554 |
Controller and transmission and reception method for radio communications in a transceiver for radio communications |
Nov. 10, 2009 |
| 7616555 |
Minimum variance location estimation in wireless networks |
Nov. 10, 2009 |
| 7613101 |
Receiving processing method and apparatus |
Nov. 3, 2009 |
| 7613102 |
Apparatus and method for clock synchronization in a multi-point OFDM/DMT digital communications system |
Nov. 3, 2009 |
| 7609608 |
Method and apparatus for data transfer using a time division multiple frequency scheme with additional modulation |
Oct. 27, 2009 |
| 7609609 |
Apparatus and method for processing digital signal in an OFDMA wireless communication system |
Oct. 27, 2009 |
| 7606139 |
Preamble detection using frequency based correlation |
Oct. 20, 2009 |
| 7606165 |
What-if analysis for network diagnostics |
Oct. 20, 2009 |
| 7602745 |
Multiple input, multiple output wireless communication system, associated methods and data structures |
Oct. 13, 2009 |
| 7599281 |
Low rate MIMO |
Oct. 6, 2009 |
| 7599327 |
Method and apparatus for accessing a wireless communication system |
Oct. 6, 2009 |
| 7599344 |
Method and apparatus for reducing multi-user processing in wireless communication systems |
Oct. 6, 2009 |
| 7596181 |
Apparatus and method for frequency synchronization in OFDM system |
Sep. 29, 2009 |
| 7596167 |
Allocation method, network element, module and user device |
Sep. 29, 2009 |
| 7596080 |
Method for distributing data on an OFDM time-frequency grid allowing for coordination of interferences and adaptive subcarrier frequency allocation, a base transceiver station, a base station |
Sep. 29, 2009 |
| 7593316 |
Method for distributing data on an OFDM time-frequency grid, a base transceiver station, a base station controller and a mobile network therefor |
Sep. 22, 2009 |
| 7590183 |
Generating signals for transmission of information |
Sep. 15, 2009 |
| 7586846 |
System and method for relaying signal in a communication system |
Sep. 8, 2009 |
| 7583582 |
M-ary orthogonal keying system |
Sep. 1, 2009 |
| 7583624 |
Method of idle mode control in OFDM system |
Sep. 1, 2009 |
| 7584259 |
System and method for providing service technicians access to dispatch information |
Sep. 1, 2009 |
| 7580400 |
Apparatus and method for generating preamble signal for cell identification in an orthogonal frequency division multiplexing system |
Aug. 25, 2009 |
| 7577127 |
Apparatus and method for multiplexing packets for broadcast services in a mobile communication system based on orthogonal frequency division multiplexing |
Aug. 18, 2009 |
| 7577210 |
Method and system for communicating data frames |
Aug. 18, 2009 |
| 7573850 |
Multi-carrier communications with group-based subcarrier allocation |
Aug. 11, 2009 |
| 7573852 |
Transmitting/receiving apparatus and method for packet retransmission in a mobile communication system |
Aug. 11, 2009 |
| 7570684 |
Method for joint time synchronization and frequency offset estimation in OFDM system and apparatus of the same |
Aug. 4, 2009 |
| 7570626 |
Communication method, transmitting device using the same, and receiving device using the same |
Aug. 4, 2009 |
| 7564774 |
Communication network using code division multiplexing technology |
Jul. 21, 2009 |
| 7564813 |
Apparatus for adaptive resource allocation for multi-channel communication system, and a method thereof |
Jul. 21, 2009 |
| 7564908 |
Method and apparatus for encryption of over-the-air communications in a wireless communication system |
Jul. 21, 2009 |
| 7564909 |
Apparatus and method for detecting ranging signal in an orthogonal frequency division multiple access mobile communication system |
Jul. 21, 2009 |
| 7561628 |
Apparatus and method for cell acquisition and downlink synchronization acquisition in a wireless communication system |
Jul. 14, 2009 |
| 7561637 |
Determination of a channel estimate of a transmission channel |
Jul. 14, 2009 |
| 7555034 |
Apparatus and method for detecting timing error based on cyclic correlation |
Jun. 30, 2009 |
| 7551679 |
Symmetrical data signal processing |
Jun. 23, 2009 |
| 7551666 |
Wireless communications system and wireless digital receiver for use therein |
Jun. 23, 2009 |
| 7545770 |
Radio communication system and radio communication method |
Jun. 9, 2009 |
| 7545874 |
Apparatus for pre-scaling data packets with multiple signal gain coefficients in a SIMO/MISO transceiver for communication with a SISO transceiver |
Jun. 9, 2009 |
| 7542407 |
System and method for communicating digital information using time-and-frequency-bounded base functions |
Jun. 2, 2009 |
| 7539125 |
Method and circuit for frequency offset estimation in frequency domain in the orthogonal frequency division multiplexing baseband receiver for IEEE 802.11A/G wireless LAN standard |
May. 26, 2009 |
| 7539255 |
Using multiple pilot signals for timing error estimation in digital subscriber line communications |
May. 26, 2009 |
| 7535822 |
Synchronization of remote units for a communication network |
May. 19, 2009 |
| 7536168 |
Method, emitter and receiver for transmitting data in a multi-access CDMA system by fully complementary code matrixes for two-dimensional data spreading in a frequency and time direction |
May. 19, 2009 |
| 7532902 |
Method and apparatus for cell search in wireless communication system |
May. 12, 2009 |
| 7532599 |
Apparatus and method for allocating user in a multiple antenna mobile communication system supporting multi-user diversity |
May. 12, 2009 |
| 7532563 |
Mechanism to improve quality of channel estimates in OFDM transmissions |
May. 12, 2009 |
| 7529372 |
Method for setting an encryption key for logical network separation |
May. 5, 2009 |
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