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- M. A. Aldajani and A. H. Sayed, Adaptive multi-bit delta and sigma-delta modulation, US patent 7,391,350, issued June 24, 2008.
- M. A. Aldajani and A. H. Sayed, Reducing power control errors in wireless communication systems , US patent 7,415,285, issued August 19, 2008.
- N. Yousef and A. H. Sayed, Method and apparatus for resolving multipath components for wireless location finding, US patent 7,068,742, issued June 27, 2006.
- A. H. Sayed and M. A. Aldajani, Adaptive sigma-delta modulation with improved dynamic range, US patent 7,073,113, issued July 4, 2006.
- N. Al-Dhahir and A. H. Sayed, Finite-length equalization over multi-input multi-output channels, US patent 6,870,882, issued March 22, 2005.