1
Dhananjay Ashok Gore, Avneesh Agrawal, Tamer Kadous: Pilot transmission schemes for a multi-antenna system. Qualcomm Incorporated, Philip R Wadsworth, Sandip S Minhas, Penz Zhu, December 5, 2006: US07145940 (99 worldwide citation)

Efficient pilot transmission schemes for multi-antenna communication systems are described. In general, MISO receivers prefer a pilot transmitted in one spatial direction, and MIMO receivers typically require a pilot transmitted in different spatial directions. In one pilot transmission scheme, a fi ...


2
Tingfang Ji, Ayman Naguib, Arak Sutivong, Dhananjay Ashok Gore, Alexei Gorokhov: Channel structures for a quasi-orthogonal multiple-access communication system. QUALCOMM Incorporated, Stanton Braden, May 21, 2013: US08446892 (41 worldwide citation)

A channel structure has at least two channel sets. Each channel set contains multiple channels and is associated with a specific mapping of the channels to the system resources available for data transmission. Each channel set may be defined based on a channel tree having a hierarchical structure. T ...


3
Petru Cristian Budianu, Dhananjay Ashok Gore, Alexei Gorokhov: Simplified channel and interference estimation with dedicated pilot tones for OFDMA. Qualcomm Incorporated, Turocy & Watson, July 6, 2010: US07751510 (37 worldwide citation)

Estimation of channel characteristics and interference level in a time-varying multi-carrier multi-user systems is carried out concurrently. To perform the estimation, a multitude of data symbols and dedicated pilot symbols are transmitted over the channel. The estimate of the interference level is ...


4
Dhananjay Ashok Gore, Avneesh Agrawal, Aamod Khandekar: Incremental pilot insertion for channnel and interference estimation. QUALCOMM Incorporated, Donald C Kordich, December 27, 2011: US08085875 (28 worldwide citation)

Dynamic resource allocation systems, apparatus, and methods are disclosed for selectively improving the ability of a receiver to determine a channel estimate in an Orthogonal Frequency Division Multiple Access (OFDMA) system. A wireless communication system can use a common pilot channel configurati ...


5
Hemanth Sampath, Dhananjay Ashok Gore, Edward Harrison Teague: Digital and analog power control for an OFDMA/CDMA access terminal. QUALCOMM Incorporated, Howard H Seo, January 10, 2012: US08095166 (18 worldwide citation)

Aspects describe controlling a power level for an access terminal in a wireless communication system that utilizes multiple modulation waveforms. The power can be controlled after an Access Grant is received in response to an Access Probe until the mobile device transitions into a steady state. A re ...


6
Dhananjay Ashok Gore, Avneesh Agrawal: Pilot transmission and channel estimation for an OFDM system with excess delay spread. QUALCOMM Incorporated, Peng Zhu, Thien Nguyen, Thomas Rouse, March 4, 2008: US07339999 (18 worldwide citation)

Pilot transmission and channel estimation techniques for an OFDM system with excess delay spread are described. To mitigate the deleterious effects of excess delay spread, the number of pilot subbands is greater than the cyclic prefix length. This “oversampling” may be achieved by using more pilot s ...


7
Alexei Gorokhov, Avneesh Agrawal, Dhananjay Ashok Gore, Arvind Vijay Keerthi: Iterative channel and interference estimation with dedicated pilot tones for OFDMA. QUALCOMM Incorporated, Dmitry R Milikovsky, Stanton C Braden, November 9, 2010: US07830976 (17 worldwide citation)

Estimation of channel characteristics and interference level in a time-varying multi-carrier multi-user systems is carried out concurrently. To perform the estimation, a multitude of data symbols and dedicated pilot symbols are transmitted over the channel. Next, an initial estimate value is selecte ...


8
Dhananjay Ashok Gore, Ravi Palanki: Frequency division multiple access schemes for wireless communication. QUALCOMM Incorporated, Kenneth Vu, November 12, 2013: US08582548 (12 worldwide citation)

Techniques for transmitting data using single-carrier frequency division multiple access (SC-FDMA) multiplexing schemes are described. In one aspect, data is sent on sets of adjacent subbands that are offset from one another to achieve frequency diversity. A terminal may be assigned a set of N adjac ...


9
Dexu Lin, Ravi Palanki, Dhananjay Ashok Gore: Method and apparatus for mitigating relay interference. QUALCOMM Incorporated, Arent Fox, November 10, 2015: US09185711 (10 worldwide citation)

Methods and apparatuses are provided that include selecting resources for assigning to a device to mitigate relay self-interference when also communicating with a base station. The resources can be selected based on one or more factors, such as based on resources that are negotiated with the base st ...


10
Tingfang Ji, Ayman Naguib, Arak Sutivong, Dhananjay Ashok Gore, Alexei Gorokhov: Channel structures for a quasi-orthogonal multiple-access communication system. QUALCOMM Incorporated, Stanton Braden, October 1, 2013: US08547951 (9 worldwide citation)

A channel structure has at least two channel sets. Each channel set contains multiple channels and is associated with a specific mapping of the channels to the system resources available for data transmission. Each channel set may be defined based on a channel tree having a hierarchical structure. T ...