Symbol boundary detector method and device for OFDM systems

Details Symbol boundary detector method and device for OFDM systems Symbol boundary detector method and device for OFDM systems

Filed on

2007-04-10

Date issued

2007-04-10

Examiner

Tran, Khai (Department: 2611)

Patent Class

Pulse or digital communications

SubClass

Systems using alternating or pulsating current

SubSubClass

Plural channels for transmission of a single pulse train

Other Related Categories

C375S219000

Type

Reexamination Certificate

Status

active

Patent number

10403552

Description

ABSTRACT:
The present invention relates to the field of data communication electronics and to a wired or wireless signal transmitter or receiver and methods providing improved signal-to-noise ratio (SNR) performance for the reception of data packets transmitted in the form of symbols modulated onto a signal. More particularly, methods and methods are disclosed for detecting the preamble and symbol boundaries of received data packets encoded with OFDM and other multi-carrier symbol transmission systems. Also disclosed are combinations of sensitive preamble detection and data payload and/or signal field encoding methods to spread data redundantly, to improve reception under a low SNR condition. This invention may be applied to a variety of standards utilizing OFDM and similar technologies, including IEEE 802.11a, Hiperlan/2 and MMAC. Particular aspects of the present invention are disclosed in the claims, specification and drawings.

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Heiskala, et al. OFDM Wireless LANs: A Theoretical and Practical Guide, pp. 31-46. Copyright 2002.
Heiskala, et al. OFDM Wireless LANs: A Theoretical and Practical Guide, pp. 106-122. Copyright 2002.
Van Nee et al. “OFDM for Wireless Multimedia Communications”, pp. 73-93 Copyright 2000.

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