James L Basso

US Patent:

6345078, Feb 5, 2002

Filed:

Jul 31, 1997

Appl. No.:

08/903626

Inventors:

James Basso - Englishtown NJ

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

H04B 110

US Classification:

375349, 375347

Abstract:

A finger assignment system prevents the assignment of receiver fingers to the same multipath component and to avoid the inefficiencies associated with current schemes. The finger assignment system accomplishes this by setting an offset or delay difference between the offsets or delays assigned to any two fingers, and if the offset or delay difference is violated, adjusting the offset(s) or delay(s) of one or both of the fingers to differ from each other by at least the offset difference. In certain embodiments, the receiver establishes an offset or delay difference between the offsets or delays assigned to any two fingers which are receiving signals from the same antenna. If the offset difference is violated, the finger assignment system adjusts the assigned offset or delay of the weaker finger to differ from the assigned offset of the stronger finger by at least the offset difference. Thus, the receiver scheme according to the principles of the present invention tends to have more receiver fingers tracking more multipath components a higher percentage of the time. The more effective use of the receiver fingers according to the principles of the present invention tends to increase the multipath diversity of the receiver and to improve the average SNR of the receiver.

US Patent:

7512149, Mar 31, 2009

Filed:

Apr 23, 2003

Appl. No.:

10/421190

Inventors:

James Basso - Englishtown NJ, US
Hamid R Sadjadpour - West Caldwell NJ, US
Ranjan V Sonalkar - North Caldwell NJ, US

Assignee:

AT & T Intellectual Property II, L.P. - Reno NV

International Classification:

H04J 3/16
H04J 3/22
H04B 1/38
H04L 5/16

US Classification:

370465, 375222, 375260

Abstract:

The present invention provides a method, data modulator, modem, computer readable medium and system for allocating bits to sub-carriers of data channel frequencies for spectrally efficient full-duplex transmission. Bits are allocated successively to a plurality of sub-carriers for a data channel based on minimal power consumption, a power mask for each sub-carrier, a bit capacity of each sub-carrier, and a predetermined data rate. Allocation of bits is ceased when at least one of: a predetermined total power budget has been substantially exhausted, power masks for the plurality of sub-carriers have been substantially exhausted, bit capacities for the plurality of sub-carriers have been substantially exhausted, and the predetermined data rate has been reached.

US Patent:

8009692, Aug 30, 2011

Filed:

Mar 31, 2009

Appl. No.:

12/384189

Inventors:

James Basso - Englishtown NJ, US
Hamid R Sadjadpour - West Caldwell NJ, US
Ranjan V Sonalkar - North Caldwell NJ, US

Assignee:

AT&T Intellectual Property II L.P. - Atlanta GA

International Classification:

H04J 3/16

US Classification:

370465, 370480, 370468, 375222, 375260

Abstract:

The present invention provides a method, data modulator, modem, computer readable medium and system for allocating bits to sub-carriers of data channel frequencies for spectrally efficient full-duplex transmission. Bits are allocated successively to a plurality of sub-carriers for a data channel based on minimal power consumption, a power mask for each sub-carrier, a bit capacity of each sub-carrier, and a predetermined data rate. Allocation of bits is ceased when at least one of: a predetermined total power budget has been substantially exhausted, power masks for the plurality of sub-carriers have been substantially exhausted, bit capacities for the plurality of sub-carriers have been substantially exhausted, and the predetermined data rate has been reached.