Pulse or digital communications – Receivers – Interference or noise reduction
Reexamination Certificate
2005-10-04
2005-10-04
Nguyen, Simon (Department: 2685)
Pulse or digital communications
Receivers
Interference or noise reduction
C455S070000, C455S506000, C455S101000, C455S138000, C455S562100, C375S299000, C375S349000
Reexamination Certificate
active
06952459
ABSTRACT:
Method of obtaining a transmission gain function by means of an array of antennae, a signal to be transmitted by the array being weighted by a vector ({overscore (b)}d) of N complex coefficients, referred to as the transmission weighting vector, N being the number of antennae in the array, the array transmitting to a telecommunication terminal over a transmission channel, referred to as the downlink channel, a downlink transmission signal (Sd) and the said terminal transmitting to the said array over a transmission channel, referred to as the uplink channel, an uplink transmission signal (Su), the said downlink channel being disturbed by an isotropic noise (N′) and/or a directional noise, referred to as the downlink interference (Id), the said transmission weighting vector ({overscore (b)}d) being determined by means of a matrix product from a noise power matrix (Dd) which is a function of the power of the said isotropic noise and/or of the power of the said directional noise and a vector ({overscore (Cd)}), referred to as the downlink channel vector, representing an angular sampling of the transfer function of the downlink channel in M directions k, k=0, . . . , M−1, belonging to the angular range covered by the array.
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Mitsubishi Denki & Kabushiki Kaisha
Nguyen Simon
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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