1
Tamer Kadous: Data transmission with non-uniform distribution of data rates for a multiple-input multiple-output (MIMO) system. Qualcomm, Philip Wadsworth, Sandip, Albert J Harnois, October 21, 2003: US06636568 (148 worldwide citation)

Techniques to determine data rates for a number of data streams transmitted via a number of transmission channels (or transmit antennas) in a multi-channel (e.g., MIMO) communication system. In one method, the “required” SNR for each data rate to be used is initially determined, with at least two da ...


2
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 ...


3
Tamer Kadous, Ivan Jesus Fernandez Corbaton: Rate control for multi-channel communication systems. Qualcomm Incorporated, Dmitry R Milikovsky, Micky Minhas, Philip Wadsworth, February 27, 2007: US07184713 (97 worldwide citation)

Techniques to determine a set of rates for a set of data streams to be transmitted in a multi-channel communication system. A group of transmission channels to be used for each data stream is initially identified. An equivalent system for each group is then defined to have an AWGN (or flat) channel ...


4
Tamer Kadous: Rate selection for a multi-carrier MIMO system. QUALCOMM Incorporated, Sandip S Minhas, James K O Hare, Thomas R Rouse, March 24, 2009: US07508748 (83 worldwide citation)

To select a rate for data transmission in a multi-carrier MIMO system with a multipath MIMO channel, a post-detection SNR SNRl(k) for each subband k of each spatial channel l is initially determined and used to derive a constrained spectral efficiency Sl(k) based on a constrained spectral efficiency ...


5
Ranganathan Krishnan, Rajiv Vijayan, Tamer Kadous: Uplink pilot and signaling transmission in wireless communication systems. QUALCOM Incorporated, Dmitry R Milikovsky, Sandip, Philip R Wadsworth, May 9, 2006: US07042857 (77 worldwide citation)

Techniques to more efficiently transmit pilot and signaling on the uplink in an OFDM system. With subband multiplexing, M usable subbands in the system are partitioned into Q disjoint groups of subbands. Each subband group may be assigned to a different terminal for uplink pilot transmission. Multip ...


6
Tamer Kadous: Ordered successive interference cancellation receiver processing for multipath channels. Qualcomm Incorporated, Philip Wadsworth, Sandip, October 5, 2004: US06801580 (68 worldwide citation)

Techniques to process a number of “received” symbol streams in a Multiple-Input Multiple-Output (MIMO) system with multipath channels such that improved performance may be achieved when using successive interference cancellation (SIC) processing. In an aspect, metrics indicative of the quality or “g ...


7
Avneesh Agrawal, Rajiv Vijayan, Tamer Kadous: Rate adaptive transmission scheme for MIMO systems. QUALCOMM Incorporated, Sandip, Philip Wadsworth, March 29, 2005: US06873606 (65 worldwide citation)

A rate adaptive transmission scheme for MIMO systems, which can transmit a variable number of data symbol streams, provide transmit diversity for each data symbol stream, and fully utilize the total transmit power of the system and the full power of each antenna. In one method, at least one data sym ...


8
Tamer Kadous, Anand D Subramaniam: Successive interference cancellation receiver processing with selection diversity. Qualcomm Incorporated, Dmitry Milikovsky, Micky Minhas, Philip Wadsworth, July 12, 2005: US06917821 (61 worldwide citation)

Techniques are provided to support successive interference cancellation (SIC) receiver processing with selection diversity whereby each of NT transmit antennas may be turned on or off. One symbol stream may be transmitted from each transmit antenna. A SIC receiver recovers the transmitted symbol str ...


9
Tamer Kadous: Data transmission with non-uniform distribution of data rates for a multiple-input multiple-output (MIMO) system. Qualcomm Incorporated, Philip R Wadsworth, Sandip, Dmitry R Milikovsky, February 13, 2007: US07177351 (59 worldwide citation)

Techniques to determine data rates for a number of data streams transmitted via a number of transmission channels (or transmit antennas) in a multi-channel (e.g., MIMO) communication system. In one method, the “required” SNR for each data rate to be used is initially determined, with at least two da ...


10
Ranganathan Krishnan, Tamer Kadous: Channel estimation for OFDM communication systems. Qualcomm Incorporated, Sandip, Philip Wadsworth, May 2, 2006: US07039001 (59 worldwide citation)

Techniques to estimate the frequency response of a wireless channel in an OFDM system. In one method, an initial estimate of the frequency response of the wireless channel is obtained for a first group of subbands based on a pilot transmission received via the subbands in the first group. An estimat ...