Inventor
KARIMULLAH KHALID
US19 patents
⚠️ This page may combine multiple inventors who share the name “KARIMULLAH KHALID”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HUGHES ELECTRONICS CORP
7 patentsUS6539050B1Mar 25, 2003
Method for transmitting wideband signals via a communication system adapted for narrow-band signal transmission
HUGHES ELECTRONICS CORP92 citations98
US6741581B1May 25, 2004
System and method for transmitting data in frame format using an R-Rake retransmission technique with blind identification of data frames
HUGHES ELECTRONICS CORP31 citations92
US6738366B1May 18, 2004
System and method for using inhibit sense multiple access (isma) protocol and a capture message to optimize random access control and data packet communication between access terminals and a base station over a wireless reverse common channel
HUGHES ELECTRONICS CORP40 citations92
US6510147B1Jan 21, 2003
Method and apparatus for orthogonally overlaying variable chip rate spread spectrum signals
HUGHES ELECTRONICS CORP32 citations92
US6396822B1May 28, 2002
Method and apparatus for encoding data for transmission in a communication system
HUGHES ELECTRONICS CORP24 citations92
US6351240B1Feb 26, 2002
Circularly polarized reflect array using 2-bit phase shifter having initial phase perturbation
HUGHES ELECTRONICS CORP41 citations92
US6178334B1Jan 23, 2001
Cellular/PCS network with distributed-RF base station
HUGHES ELECTRONICS CORP41 citations88
DIRECTV GROUP INC
6 patentsUS7492749B2Feb 17, 2009
Method and system for providing multi-input-multi-output (MIMO) downlink transmission
DIRECTV GROUP INC18 citations92
US6940809B2Sep 6, 2005
System and method for transmitting data in frame format using an R-Rake retransmission technique with blind identification of data frames
DIRECTV GROUP INC22 citations92
US7342904B2Mar 11, 2008
Method and apparatus for orthogonally overlaying variable chip rate spread spectrum signals
DIRECTV GROUP INC5 citations74
US7505440B2Mar 17, 2009
Method and apparatus for orthogonally overlaying variable chip rate spread spectrum signals
DIRECTV GROUP INC2 citations63
US7483490B2Jan 27, 2009
Method for transmitting wideband signals via a communication system adapted for narrow-band signal transmission
DIRECTV GROUP INC4 citations63
US7317710B2Jan 8, 2008
Method and apparatus for encoding data for transmission in a communication system
DIRECTV GROUP INC0 citations52