Method and apparatus implementing an overlay adaptive...

Details Method and apparatus implementing an overlay adaptive... Method and apparatus implementing an overlay adaptive...

2006-04-25

2006-04-25

Vo, Don N. (Department: 2631)

Pulse or digital communications

Spread spectrum

Frequency hopping

Reexamination Certificate

active

07035314

ABSTRACT:
A novel method and apparatus for implementing an overlay adaptive frequency-hopping kernel in a wireless communication system is described. The present inventive method and apparatus selects hopping frequencies based on channel conditions. Hopping frequencies are selected using an inventive overlay adaptive frequency-hopping (OAFH) kernel that maps bad channels to good channels while retaining the pseudo-random properties of the original frequency-hopping sequence. The OAFH kernel uses existing FH kernels to initially select hopping frequencies. If the initially selected hopping frequency has bad channel condition characteristics, the OAFH kernel maps the initially selected hopping frequency to a substitute hopping frequency having good channel condition characteristics.

REFERENCES:
patent: 2001/0022805 (2001-09-01), Dabak et al.
patent: 2002/0136268 (2002-09-01), Gan et al.
Bluetooth Special Interest Group (SIG), entitled Specification of the Bluetooth System, version 1.1″, published Feb. 22, 2001, Section 1, Part B, Section 1, pp. 41-42, Section 2.1, p. 43, Section 4.1-2, pp. 47-50, Section 10.9, p. 120 and Section 11, pp. 126-137. Website: www.bluetooth.com.
Jaap C. Haartsen, Method for FH Sequence Adaptation , Ericsson, Mar. 16, 2000.

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