Using antenna arrays in multipath environment

Details Using antenna arrays in multipath environment Using antenna arrays in multipath environment

2007-02-27

2007-02-27

Kim, Kevin (Department: 2611)

Pulse or digital communications

Transmitters

Plural diversity

C375S267000

Reexamination Certificate

active

10361244

ABSTRACT:
The invention comprises using beamforming antenna to coherently transmit an information signal to a receiver using two or more directional beams. In one embodiment, the phase and timing of the information signals carried by each directional beams are adjusted such that the signals arrive synchronously at the mobile terminal. Time synchronization may be obtained by delaying signals transmitted on selected directional beams to compensate for different propagation delays, or by preconditioning and filtering the signals using a channel coefficient matrix.

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