Pilot pattern design for an OFDM system

Details Pilot pattern design for an OFDM system Pilot pattern design for an OFDM system

2006-01-25

2010-02-09

Cho, Hong (Department: 2419)

Multiplex communications

Generalized orthogonal or special mathematical techniques

C370S208000, C370S478000, C375S347000

Reexamination Certificate

active

07660228

ABSTRACT:
The present invention relates to a transmitting device and a receiving device in a wireless orthogonal frequency division multiplex (OFDM) communication system with space time transmit diversity (STTD). Further, the present invention relates to a channel estimation method for performing a channel estimation in such a wireless communication system, in which the transmitting device comprises a first and a second antenna for transmitting signals with space time transmit diversity. The first and the second antenna means are arranged spaced apart from each other in a space diversity arrangement, whereby first and second pilot symbols are transmitted via said first and said second antenna means, respectively. Some of the second pilot symbols are orthogonal to corresponding ones of the first pilot symbols, so that a channel estimation to separately determine the transmission quality of signals transmitted from the first and the second antenna means, respectively, can be performed in a receiving device which receives the signals with only one single antenna.

REFERENCES:
patent: 5867478 (1999-02-01), Baum et al.
patent: 6005876 (1999-12-01), Cimini, Jr. et al.
patent: 6131016 (2000-10-01), Greenstein et al.
patent: 6618454 (2003-09-01), Agrawal et al.
patent: 6643338 (2003-11-01), Dabak et al.
patent: 6654339 (2003-11-01), Bohnke et al.
patent: 6728302 (2004-04-01), Dabak et al.
patent: 6795392 (2004-09-01), Li et al.
patent: 6853689 (2005-02-01), Nilsson
patent: 6961364 (2005-11-01), Laroia et al.
patent: 2001/0033623 (2001-10-01), Hosur
patent: 0 810 742 (1997-12-01), None
patent: 0 876 002 (1998-11-01), None
patent: 0 898 381 (1999-02-01), None
patent: 0 938 208 (1999-08-01), None
patent: 0 993 129 (2000-12-01), None
patent: WO 98/38758 (1998-09-01), None
patent: WO 98/59450 (1998-12-01), None
Siavash M. Alamouti; “A Simple Transmit Diversity Technique for Wireless Communication”, IEEE Journal on Select Areas in Communication, vol. 16, No. 8, Oct. 1998, pp. 1451-1485.
Z. Liu, G. B. Glannakis, A. Scaglione, S. Barbarossa; “Decoding and Equalization of Unknown Multipath Channels Based on Block Percoding and transmit-Antenna Diversity”; Dept. of ECE, Univ. of Minnesota; 200 Union Str. SE, Minneapolis, MN 55455, pp. 1557-1561.
U.S. Appl. No. 11/608,685, filed Dec. 8, 2006, Wang et al.
U.S. Appl. No. 11/338,644, filed Jan. 25, 2006, Wang et al.
Ayman F. Naguib et al., “Space-Time Coding and Signal Processing for High Data Rate Wireless Communications”, IEEE Signal Processing Magazine, vol. 17, No. 3, May 2000, pp. 76-92.
Fredrik Tufvesson et al., “Pilot Assosted Channel Estimation for OFDM in Mobile Cellular Systems”, Vehicular Technology Conference, vol. 3, May 4, 1997, pp. 1639-1643.
Tai-Ann Chen et al., “Two Dimensional Space-Time Pilot Symbol Assisted Demodulation over Frequency Nonselective Rayleigh Fading Channels”, Wireless Communications and Networking Conference, Sep. 21, 1999, pp. 1065-1069.
Ayman F. Naguib, et al., “A Space-Time Coding Modem for High-Data-Rate Wireless Communications”, IEEE Journal on Selected Areas in Communications, Oct. 1998, pp. 1459-1478, vol. 16., No. 8.
Vahid Tarokh, et al., “Space-Time Codes for High Data Rate Wireless Communication: Performance Criterion and Code Constructions”, IEEE Transactions on Information Theory, Mar. 1998, pp. 744-765, vol. 44, No. 2.
Andreas Wilde, TS 25.211 - 3rdGeneration Partnership Project (3GPP); Technical Specification Group (TSG); Radio Access Network (RAN); Working Group 1 (WG1); Physical channels and mapping of transport channels onto physical channels (FDD), Oct. 1999, pp. 1-38, V3.0.0.
Dakshi Agrawal, et al., “Space-Time Coded OFDM for High Data-Rate Wireless Communication Over Wideband Channels”, 1998 IEEE, pp. 2232-2236.
Ye (Geoffrey) Li, et al., Transmitter Diversity for OFDM Systems and its Impact on High-Rate Data Wireless Networks, IEEE Journal on Selected Areas in Communications, Jul. 1999, pp. 1233-1243, vol. 17., No. 7.
Siavash M. Alamouti, “A Simple Transmit Diversity Technique for Wireless Communications”, Oct. 1998, pp. 1451- 1458, vol. 16, No. 8.
European Standard (Telecommunications series), “Final draft ETSI EN 300744 - Digital Video Broadcasting (DVB); Framing structure, channel coding and modulation for digital terrestrial television”, Jun. 2004, pp. 1-64, V. 1.5.1.
Frederick W. Vook, et al., “Transmit Diversity Schemes for Broadband Mobile Communication Systems”, IEEE 2000, pp. 2523-2529.

Affiliated with

Also associated with

Rating

Pilot pattern design for an OFDM system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pilot pattern design for an OFDM system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pilot pattern design for an OFDM system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4191156