Adaptive channel bandwidth selection for MIMO wireless systems

Pulse or digital communications – Systems using alternating or pulsating current

Reexamination Certificate

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Reexamination Certificate

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07545867

ABSTRACT:
A wireless communications device for a multiple input multiple output wireless communications system includes a radio frequency transceiver that includes at least two antennae and a medium access control device that includes a link adaptation module. The link adaptation module dynamically adjusts a bandwidth of the wireless communications device based on a transmission error rate and a correlation measurement at a remote wireless communications device. A transmission error module receives the transmission error rate from the remote wireless communications device and generates a transmission error control signal. A signal correlation module receives the correlation measurement from the remote wireless communication device and generates a signal correlation control signal. The link adaptation module adjusts at least one of the bandwidth and an amount of spatial multiplexing that is executed by a space-time processor based on the transmission error control signal and the signal correlation control signal.

REFERENCES:
patent: 6493399 (2002-12-01), Xia et al.
patent: 6519259 (2003-02-01), Baker et al.
patent: 6922445 (2005-07-01), Sampath et al.
patent: 2002/0085643 (2002-07-01), Kitchener et al.
patent: 2003/0003863 (2003-01-01), Thielecke et al.
patent: 2003/0086371 (2003-05-01), Walton et al.
patent: 2003/0095508 (2003-05-01), Kadous et al.
patent: 2003/0095573 (2003-05-01), Vook et al.
patent: 2004/0059825 (2004-03-01), Edwards et al.
patent: 2004/0190528 (2004-09-01), Dacosta
patent: 2005/0002468 (2005-01-01), Walton et al.
patent: 2006/0111148 (2006-05-01), Mukkavilli et al.
patent: 1309102 (2003-07-01), None
Merriam-Webster OnLine definition of “bandwidth”.
Flexible Transmission Bandwidth Management with Effective Channel Reservation Techniques for NGSO MSS Networks; Konishi et a, Sep. 1997, IEEE Journal on Selected Areas in Communications, vol. 15, No. 7, pp. 1197-1207.
“802.16 IEEE Standard for Local and Metropolitan Area Networks; Part 16: Air Interface for Fixed Broadband Wireless Access Systems,” 802.16 IEEE Standard for Local and Metropolitan Area Networks, Oct. 1, 2004, pp. i-xxxiv and pp. 1-857, IEEE Std 802.16-2004, IEEE, United States.
ANSI/IEEE Std. 802.11, 1999 Edition; Part 11: Wireless LAN Medium Access Cntrol (MAC) and Physical Layer (PHY) Specifications; Information technology—Telecommunications and information exchange between systems—Local and metropolitan area networks—Specific requirements; pp. 1-512.
IEEE P802.11g/D8.2 Apr. 2003 (Supplement to ANSI/IEEE std. 802.11 1999 (Reaff 2003)) Draft Supplement Standard for Part 11: Wireless LAN Medium Access Cntrol (MAC) and Physical Layer (PHY) Specifications; Information technology—Telecommunications and information exchange between systems—Local and metropolitan area networks—Specific requirements; Further Higher Data Rate Extension in the 2.4 GHz Band; pp. 1-69.
IEEE Std. 802.11a-1999; Supplement to IEEE Standard for Information Technology—Telecommunications and information exchange between systems—Local and metropolitan area networks—Specific requirements; Part: 11 Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications; High-speed Physical Layer in the 5 GHz Band; pp. 1-83.
IEEE Std. 802.11b; Supplement to IEEE Standard for Information technology—Telecommunications and information exchange between systems—Local and metropolitan area networks—Specific requirements; Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications: Higher-Speed Physical Layer Extension in the 2.4 GHz Band; Approved Sep. 16, 1999; pp. 1-89.
IEEE Std. 802.11b-1999/Cor 1-2001;IEEE Standard for Information technology—Telecommunications and information exchange between systems—Local and metropolitan area networks—Specific requirements; Part 11: Wireless LAN Medium Access Cntrol (MAC) and Physical Layer (PHY) Specifications; Amendment 2: Higher-speed Physical Layer (PHY) extension in the 2.4 GHz band—Corrigendum 1; pp. 1-15.
IEEE Std. 802.16; IEEE Standard for Local and metropolitan area networks; Part 16: Air Interface for Fixed Broadband Wireless Access Systems; Apr. 8, 2002; pp. 1-322.
IEEE Std. 802.16a; IEEE Standard for Local and metropolitan area networks; Part 16: Air Interface for Fixed Broadband Wireless Access Systems—Amendment 2: Medium Access Control Modifications and Additional Physical Layer Specifications for 2-11 GHz; Apr. 1, 2003; pp. 1-292.
Catreux/Erceg/Gesbert/Heath, “Adaptive Modulation and MIMO Coding for Broadband Wireless Data Networks”, IEEE Communications Magazine, Jun. 2002, pp. 108-115.
Chizhik/Foschini/Gans/Valenzuela, “Keyholes, Correlations, and Capacities of Multielement Transmit and Receive Antennas”, IEEE Transactions on Wireless Communications, vol. 1, No. 2, Apr. 2002, pp. 361-368.
Driessen/Foschini, “Transactions Letters On the Capacity Formula for Multiple Input-Multiple Output Wireless Channels: A Geometric Interpretation”, IEEE Transactions on Communications, vol. 47, No. 2, Feb. 1999, pp. 173-176.
Foschini/Gans, “On Limits of Wireless Communications in a Fading Environment when Using Multiple Antennas”, Wireless Personal Communications 6: pp. 311-335, 1998.
Goldsmith/Chua, “Variable-Rate Variable-Power MQAM for Fading Channels”, IEEE Transactions on Communications, vol. 45, No. 10, Oct. 1997, pp. 1218-1230.
Goldsmith/Jafar/Jindal/Vishwanath,“Fundamental Capacity of MIMO Channels”, Department of Electrical Engineering, Stanford University, Nov. 8, 2002, pp. 1-36.
http://www.chipcenter.com/wireless/images/app007—Fig1.jpg, Figure 1: MIMO applied to OFDM (JPEG image 350×230 pixels).
http://www.chipcenter.com/wireless/images/app007—Fig3.jpg, Figure 3: The MIMO Principle (JPEG image 350×190 pixels).
Mujtaba/Grewe, http://chipcenter.com/wireless/app007-2html?PRINT=true, Wireless Application Note, “Taking Wireless Networking to the Next Performance Plateau”, pp. 1-3.
Mujtaba/Grewe, http://chipcenter.com/wireless/app007-2html?PRINT=true, Wireless Application Note, “Taking Wireless Networking to the Next Performance Plateau . . . (Continued)”, pp. 1-2.
Seong/Kim, “Adaptive Modulation for MIMO Systems in Time-Varying Channels”, EE359 Wireless Communications Fall 2002 Term Project, pp. 1-21.
Winters, “On the Capacity of Radio Communication Systems with Diversity in a Rayleigh Fading Environment”, IEEE Journal on Selected Areas in Communications, vol. SAC-5, No. 5, Jun. 1987, pp. 871-878.
Winters, “Optimum Combining in Digital Mobile Radio with Cochannel Interference”, IEEE Journal on Selected Areas in Communications, vol. SAC-2, No. 4, Jul. 1984, pp. 528-539.
Winters, “Smart Antennas for Wireless Systems”, IEEE Personal Communications, Feb. 1998, pp. 23-27.
Wolniansky/Foschini/Golden/Valenzuela, “V-BLAST: An Architecture for Realizing Very High Data Rates Over the Rich-Scattering Wireless Channel”, 1998 IEEE, pp. 295-300.

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