Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2005-10-20
2009-08-11
Tran, Khai (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
Reexamination Certificate
active
07573944
ABSTRACT:
An apparatus and method for canceling ISI in a broadband wireless communication system are provided. In a transmitter of the broadband wireless communication system, a controller acquires a CP length, a puncturing pattern, and a time sample interval according to a delay spread. A puncturer punctures coded data in the puncturing pattern. An IFFT processor IFFT-processes the punctured coded data and outputs sample data. A CP inserter generates an OFDM symbol by inserting a copy of a last part of the sample data before the sample data. Here, the length of the last part of the sample data is equal to the CP length. A D/A converter converts the OFDM symbol to an analog signal at a sampling rate determined by the time sample interval.
REFERENCES:
patent: 7257155 (2007-08-01), Huang
patent: 2005/0068886 (2005-03-01), Wang et al.
patent: 2006/0034378 (2006-02-01), Lindskog et al.
patent: 2006/0050776 (2006-03-01), Moon et al.
patent: WO 99/65180 (1999-12-01), None
Zhang Zhao-Yang et al., A Novel OFDM Transmission Scheme with Length-Adaptive Cyclic Prefix, Journal of Zhejiang University Science, Jul. 2003.
Jan-Jaap van de Beek et al., Low-Complex Frame Synchronization in OFDM Systems, IEEE International Conference on Universal Personal Communications Record, Nov. 6-10, 1995, pp. 982-986.
Chang Young-Bin
Cho Jae-Weon
Joo Pan-Yuh
Lim Chi-Woo
Samsung Electronics Co,. Ltd
The Farrell Law Firm, LLP
Tran Khai
LandOfFree
Apparatus and method for canceling inter-symbol interference... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for canceling inter-symbol interference..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for canceling inter-symbol interference... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4116989