Institution
Qualcomm Atheros
About: Qualcomm Atheros is a based out in . It is known for research contribution in the topics: Signal & Communication channel. The organization has 219 authors who have published 263 publications receiving 8636 citations. The organization is also known as: Atheros & ATHR.
Papers
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01 Nov 2013TL;DR: In this paper, a wireless device can quickly determine its relative and/or coordinate position based on information provided by an access point in the wireless local area network (WLAN), which can reduce the time to acquire the necessary GPS satellite data.
Abstract: Accurate position capability can be quickly provided using a Wireless Local Area Network (WLAN). When associated with a WLAN, a wireless device can quickly determine its relative and/or coordinate position based on information provided by an access point in the WLAN. Before a wireless device disassociates with the access point, the WLAN can periodically provide time, location, and decoded GPS data to the wireless device. In this manner, the wireless device can significantly reduce the time to acquire the necessary GPS satellite data (i.e. on the order of seconds instead of minutes) to determine its coordinate position.
218 citations
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04 Nov 2004TL;DR: In this article, MIMO systems and methods are provided to allow legacy devices to decode the length of a packet and to restrain from transmitting during that period, which is called stomping.
Abstract: A multiple-input multiple-output (MIMO) system can transmit on multiple antennas simultaneously and receive on multiple antennas simultaneously. Unfortunately, because a legacy 802.11a/g device is not able to decode multiple data streams, such a legacy device may “stomp” on a MIMO packet by transmitting before the transmission of the MIMO packet is complete. Therefore, MIMO systems and methods are provided herein to allow legacy devices to decode the length of a MIMO packet and to restrain from transmitting during that period. These MIMO systems and methods are optimized for efficient transmission of MIMO packets.
211 citations
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TL;DR: In this article, a 5GHz transceiver comprising the RF and analog circuits of an IEEE 802.11a-compliant WLAN has been integrated in a 0.25/spl mu/m CMOS technology.
Abstract: A 5-GHz transceiver comprising the RF and analog circuits of an IEEE 802.11a-compliant WLAN has been integrated in a 0.25-/spl mu/m CMOS technology. The IC has 22-dBm maximum transmitted power, 8-dB overall receive-chain noise figure and -112-dBc/Hz synthesizer phase noise at 1-MHz frequency offset.
204 citations
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03 May 2002TL;DR: In this article, the I/Q mismatch compensation factors can be used to adjust the magnitude and phase response in the time domain or the frequency domain, the analog or the digital portion of the receiver.
Abstract: Systems and methods for passively calibrating and correcting for I/Q mismatch in a quadrature receiver without the necessity of modifying the analog portion of the receiver by adding calibration signals or correction circuitry are presented. The passive I/Q mismatch calibration system proceeds using normally received incoming transmitted data signals to obtain statistical information on which to base I/Q mismatch compensation factors. The I/Q mismatch compensation factors can be used to adjust the magnitude and phase response in the time domain or the frequency domain, the analog or the digital portion of the receiver. Depending on the embodiment, the passive I/Q mismatch calibration system can calibrate frequency dependent gain or magnitude imbalance, frequency independent magnitude imbalance, frequency dependent phase imbalance, and frequency independent phase imbalance or combinations or these.
198 citations
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25 Sep 2003TL;DR: In this paper, an antenna is provided with an electronic component or circuit that has a value corresponding to properties of the antenna, and a read mechanism reads the value and sets an operational status of a transceiver based on the value.
Abstract: An antenna is provided with an electronic component or circuit that has a value corresponding to properties of the antenna. A read mechanism reads the value and sets an operational status of a transceiver based on the value. In one embodiment, electronic component is a resistor having a value that identifies the antenna properties. A table may be used to correlate resistor values to different types of antennas or sets of antenna properties. Alternatively, the circuit can be embodied in a microchip that provides a response to a challenge sent by the read mechanism. The response encodes the properties of the antenna. The encoding scheme includes values from the challenge. Alternatively, the response is a code that is indexed into a table of antenna properties. In one embodiment, the antenna is connectorized.
185 citations
Authors
Showing all 219 results
Name | H-index | Papers | Citations |
---|---|---|---|
Lawrence W. Yonge | 31 | 117 | 3197 |
Chik Patrick Yue | 30 | 63 | 4699 |
Bevan M. Baas | 27 | 85 | 2541 |
Craig H. Barratt | 27 | 48 | 3576 |
Michael Mack | 23 | 61 | 2667 |
D. Su | 21 | 30 | 1633 |
Won Namgoong | 21 | 100 | 1682 |
Srinivas Katar | 20 | 103 | 2018 |
Ning Zhang | 20 | 106 | 1286 |
Paul J. Husted | 18 | 37 | 890 |
Olaf Hirsch | 18 | 62 | 930 |
David K. Su | 17 | 36 | 2235 |
Masoud Zargari | 17 | 29 | 876 |
D. Weber | 16 | 21 | 1043 |
Babak Vakili Amini | 15 | 18 | 851 |