-
公开(公告)号：DE60233482D1
公开(公告)日：2009-10-08
申请号：DE60233482
申请日：2002-03-28
Applicant: ATHEROS COMM INC
Inventor： TEHRANI ARDAVAN MALEKI , MCFARLAND WILLIAM
Abstract: An antenna switch diversity algorithm, and systems and methods to provide antenna diversity by implementing the algorithm in, for example, an IEEE 802.11a compliant environment, are presented. In accordance with the algorithm, one antenna of at least two antennas is designated as a default antenna at a communications device that sends and receives transmit and receive packets. The default antenna designation is changed depending on long-term and short-term learning processes implemented in, for example, software and hardware. The long-term and short-term learning processes analyze packet transmission and reception results of the antennas. The antenna switch diversity algorithm is applicable to multiple antennas.
-
公开(公告)号：DE60308672T2
公开(公告)日：2007-08-23
申请号：DE60308672
申请日：2003-05-02
Applicant: ATHEROS COMM INC
Inventor： CHESSON L , KUSKIN SCOTT
Abstract: In a preferred embodiment is described a scheduling architecture, including a plurality of queues each within an associated queue control unit, and a plurality of data control units. The queue control units are directed to operations that obtain data for transmission of a stream from a host and ensure that it is available for transmission, preferably as a single stream. The data control units are each directed to operations that format the data from the queue control units in dependence upon the transmission (or channel) characteristics that are to be associated with that data. Further, each queue control unit can configurably be input to any of the data control units. In one embodiment the output of each of the data control units is controlled by a data arbiter, so that a single stream of data is obtained.
-
公开(公告)号：IL174221D0
公开(公告)日：2006-08-01
申请号：IL17422106
申请日：2006-03-09
Applicant: ATHEROS COMM INC
IPC: H04L20100101 , H04L1/08
Abstract: A system and method are disclosed for transmitting data over a wireless channel. In some embodiments, transmitting data includes receiving convolutionally encoded data and enhancing the transmission of the data by further repetition encoding the data.
-
公开(公告)号：CA2544850A1
公开(公告)日：2005-05-19
申请号：CA2544850
申请日：2004-11-04
Applicant: ATHEROS COMM INC
Inventor： SUN QINFANG , CHOI WON-JOON , GILBERT JEFFREY M , TEHRANI ARDAVAN MALEKI
-
65.发明专利
公开(公告)号：CA2541601A1
公开(公告)日：2005-04-21
申请号：CA2541601
申请日：2004-10-06
Applicant: ATHEROS COMM INC
Inventor： TEHRANI ARDAVAN M , CHOI WON-JOON , WANG YI HSIU , GILBERT JEFFREY M
Abstract: The present invention provides an apparatus and method of multiple antenna receiver combining of high data rate wideband packetized wireless communication signals, where the apparatus includes M receive antennas, receiving M high data rate wideband packetized wireless communication signals, where each of the signals includes N frequency bins. The apparatus, in an exemplary embodiment, includes (1) a joint timing recovery units that perform joint coarse signal timing estimation, joint frequency offset estimation, and joint fine timing estimation on each of the signals, (2) M Fast Fourier Transform units (FFTs) that each convert the digital data for each of the M signals into frequency domain information for each of the N received frequencies and that output Q pilots for each of the signals, where Q is a positive integer, and (3) a combiner that weights and combines the outputs of the M FFTs for each of the N received frequencies.
-
Patent Agency Ranking
公开(公告)号：AU2003239364A8
公开(公告)日：2003-11-17
申请号：AU2003239364
申请日：2003-05-05
Applicant: ATHEROS COMM INC
Inventor： ZENG CHAOHUANG STEVE
Abstract: A system and method are disclosed for recovering a current data symbol that is part of a sequence of data symbols from a received signal. Recovering the current data symbol includes determining a set of candidate current data symbols from a set of possible current data symbols wherein the set of candidate current data symbols is a subset of the possible current data symbols that does not include all of the possible current data symbols; determining a set of candidate data symbol sequences wherein each candidate data symbol sequence includes one of the candidate current data symbols; and selecting a recovered data symbol sequence that matches the received signal from the set of candidate data symbol sequences.
-
公开(公告)号：AU2003234449A8
公开(公告)日：2003-11-17
申请号：AU2003234449
申请日：2003-05-02
Applicant: ATHEROS COMM INC
Inventor： SHOR ARIE , TERROVITIS MANOLIS , MCFARLAND WILLIAM J , THOMSON JOHN , ZARAGARI MASOUD , ONEDERA KEITH , SU DAVID
Abstract: A dual band radio is constructed using a primary and secondary transceiver. The primary transceiver is a complete radio that is operational in a stand alone configuration. The secondary transceiver is a not a complete radio and is configured to re-use components such as fine gain control and fine frequency stepping of the primary transceiver to produce operational frequencies of the secondary transceiver. The primary transceiver acts like an intermediate frequency device for the secondary transceiver. Switches are utilized to divert signals to/from the primary transceiver from/to the secondary transceiver. The switches are also configured to act as gain control devices. Antennas are selected using either wideband or narrowband antenna switches that are configured as a diode bridge having high impedance at operational frequencies on control lines that bias the diodes.
-
公开(公告)号：AU2003234449A1
公开(公告)日：2003-11-17
申请号：AU2003234449
申请日：2003-05-02
Applicant: ATHEROS COMM INC
Inventor： MCFARLAND WILLIAM J , ONEDERA KEITH , SHOR ARIE , SU DAVID , TERROVITIS MANOLIS , THOMSON JOHN , ZARAGARI MASOUD
IPC: H03H7/01 , H03H7/48 , H04B7/06 , H04B7/08 , H04L12/28 , B32B7/12 , B05D5/00 , B05D3/00 , B65H75/00
Abstract: A dual band radio is constructed using a primary and secondary transceiver. The primary transceiver is a complete radio that is operational in a stand alone configuration. The secondary transceiver is a not a complete radio and is configured to re-use components such as fine gain control and fine frequency stepping of the primary transceiver to produce operational frequencies of the secondary transceiver. The primary transceiver acts like an intermediate frequency device for the secondary transceiver. Switches are utilized to divert signals to/from the primary transceiver from/to the secondary transceiver. The switches are also configured to act as gain control devices. Antennas are selected using either wideband or narrowband antenna switches that are configured as a diode bridge having high impedance at operational frequencies on control lines that bias the diodes.
-
公开(公告)号：AU2003213569A1
公开(公告)日：2003-09-16
申请号：AU2003213569
申请日：2003-02-25
Applicant: ATHEROS COMM INC
Inventor： HUSTED PAUL J , BAAS BEVAN M
Abstract: Transient distortion is compensated for by multiplying an exponentially-decaying phase shift onto the distorted waveform. The exponentially decaying phase shift waveform is patterned after the transient which typically takes the form of an exponential and occurs upon introduction of power to a circuit or circuit component. A digital circuit produces an appropriate exponentially decaying waveform which is used as the input for a look up table whose output is a complex sinusoidal waveform capable of compensating for the distortion. The complex sinusoid is multiplied onto the transmitted waveform. The decaying exponential is biased so that it crosses a threshold at which point the compensating circuitry is turned off.
-
公开(公告)号：AU764115B2
公开(公告)日：2003-08-07
申请号：AU6612100
申请日：2000-07-28
Applicant: ATHEROS COMM INC
Inventor： MENG TERESA H
Abstract: The present invention provides an apparatus and method for optimizing power in order to increase capacity. Rather than having any terminal device limited to a specific maximum data rate, instead the terminal device data rate is limited by the power being used, such that the data rate can vary according to the distance that the terminal device is from the intended receiver.
-
-
-
-
-
-
-
-
-
Search Results
170
records
(took 0.021 seconds)
