A. Mark Earnshaw

Learn More
A b s t r a c t C e l l c a p a c i t y i n a C D M A c o m m u n i c a t i o n s y s t e m c a n b e i n-c r e a s e d t h r o u g h t h e u s e o f b a s e s t a t i o n a n t e n n a a r r a y s a n s t i m a t e t h e c a p a c-i t y o f s u c h a s y s t e m [ 4 ] [ 5 ]. M o r e r e c e n t l y , r e s e a r c h e r s h a v e s h o w n t h a t i t m a(More)
—The reverse link encoding steps of the IS95 cellular code-division multiple-access (CDMA) standard consist of con-volutional encoding, block interleaving, and orthogonal Walsh function encoding. Deinterleaving individual symbol metrics obtained from the Walsh function matched filters followed by conventional Viterbi decoding produces suboptimal results, as(More)
A linear method using optical ow to recover the translation direction of a moving camera has been previously presented. This algorithm produced a biased estimate and various compensation techniques have been proposed. The results of an error analysis of the diierent approaches containing expressions for the expected mean vectors and covariance matrices of(More)
The estimation of the 3-D displacement of a moving camera relative to a scene is critical for applications in robotics as well as object-based video compression. By estimating the relative motion within a scene, one can accurately predict object positions for the future, thereby reducing the amount of information which must be coded. This problem has an(More)
  • 1