Transmit diversity system, method and computer program product

Details Transmit diversity system, method and computer program product Transmit diversity system, method and computer program product

2007-11-27

2007-11-27

Perez-Gutierrez, Rafael (Department: 2617)

Telecommunications

Transmitter

Diversity

C455S562100, C455S277100, C455S067110, C370S335000, C375S299000

Reexamination Certificate

active

10829796

ABSTRACT:
A transmit diversity system, method, and computer program product which can prevent signal power from being wasted and also prevent interference between a plurality of beams. In the transmit diversity system, a transmitter transmits a signal after allocating the signal to a beamspace of multiple beams and a receiver receives the multiple beams and obtains a channel estimate of each of the multiple beams. A beam pair, which has the largest sum of powers of respective channel estimates of two corresponding beams, is selected from a plurality of beam pairs of the multiple beams. One of the two beams of the selected beam pair is selected as a single beam for use if the difference between the powers of the respective channel estimates of the two beams is larger than a predetermined value.

REFERENCES:
patent: 5280637 (1994-01-01), Larosa et al.
patent: 6834043 (2004-12-01), Vook et al.
patent: 6850741 (2005-02-01), Lei et al.
patent: 1364358 (2002-08-01), None
Fujii, “Beamspace-Time Transmit Diversity for Time-Domain Spreading DFDM-CDM Systems”, IEICE Trans. Commun., vol. E86-B, No. 1, Jan. 2003, pp. 344-351.
Alamouti, “A Simple Transmit Diversity Technique for Wireless Communications”, IEEE Journal on Select Areas in Communications, vol. 16, No. 8, Oct. 1998, pp. 1451-1458.

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