Multiple-input multiple-output radio transceiver

Details Multiple-input multiple-output radio transceiver Multiple-input multiple-output radio transceiver

2002-10-11

2004-04-27

Vuong, Quochien B. (Department: 2685)

Telecommunications

Transmitter and receiver at same station

C455S272000, C455S552100

Reexamination Certificate

active

06728517

ABSTRACT:

BACKGROUND OF INVENTION
This application claims priority to the following U.S. Provisional Patent Applications (the entirety of each of which is incorporated herein by reference):
Application No. 60/374,531, filed Apr. 22, 2002;
Application No. 60/376,722, filed Apr. 29, 2002;
Application No. 60/319,336, filed Jun. 21, 2002;
Application No. 60/319,360, filed Jun. 27, 2002; and
Application No. 60/319,434, filed Jul. 30, 2002.
The present invention relates to a multiple-input multiple-output (MIMO) radio transceiver.
A primary goal of wireless communication system design is to use the available spectrum most efficiently. Examples of techniques to increase spectral efficiency include coded modulation techniques such as turbo codes and trellis-coded modulation, and multiple access techniques such as code division multiple access (CDMA).
Yet another way to optimize spectral efficiency that has recently become popular in the academic community is the use of MIMO radio systems. MIMO radio communication techniques have been proposed for use in, for example, 3G mobile telephone systems. However, prior efforts to exploit the benefits of a MIMO system have failed because, among other reasons, a cost-effective MIMO radio could not be developed.
SUMMARY OF INVENTION
A MIMO radio transceiver is provided to support processing of multiple signals for simultaneous transmission via corresponding ones of a plurality of antennas and to support receive processing of multiple signals detected by corresponding ones of the plurality of antennas. The MIMO radio transceiver is one that is suitable for a highly integrated and low cost fabrication. In addition, the radio transceiver can perform MIMO transmit and receive operation in a portion of an RF band, up to substantially the entire RF band. The multiple transmit and receive paths are particularly useful to support joint maximal ratio combining techniques, also referred to herein as composite beamforming (CBF).
The radio transceiver provides, on a single semiconductor integrated circuit, a receiver circuit or path for each of a plurality of antennas and a transmit circuit or path for each of the plurality of antennas. Each receive path downconverts the RF signal detected by its associated antenna to a baseband signal, using either a direct-conversion process or a super-heterodyne (multiple conversion) process. Similarly, each transmit circuit upconverts a baseband signal to be transmitted by an assigned antenna, using either a direct up-conversion process or a multiple-stage conversion process.
The multiple receive and transmit paths are integrated onto the same semiconductor integrated circuit. This provides significant cost and space/area savings. One use of this type of radio transceiver is to receive and transmit signals that, at baseband, are processed using the aforementioned CBF techniques (whereby weighted components of a signal are sent via each of a plurality of antennas and received at the other device by one or more antennas) to enhance the link margin with another communication device. In such an application, it is very important that each of the receive processing paths and each of the transmit processing paths be matched in terms of amplitude and phase response. Because the multiple receive and transmit paths are integrated into a single semiconductor die, the processing paths will inherently be better phase and amplitude matched, and any effects resulting from semiconductor integration will track among the processing paths. Moreover, any operational changes due to temperature variations will also better track among the processing paths because they are integrated into the same semiconductor integrated circuit.
Low cost radio transceiver solutions are provided that, for example, do not require intermediate frequency (IF) filters, have power amplifiers integrated on the radio transceiver integrated circuit (IC), use one frequency synthesizer, and integrate various control switches for transmit/receive and band select operations.


REFERENCES:
patent: 4580289 (1986-04-01), Enderby
patent: 5220688 (1993-06-01), Tao
patent: 5606736 (1997-02-01), Hasler et al.
patent: 5715529 (1998-02-01), Kianush et al.
patent: 5752169 (1998-05-01), Hareyama et al.
patent: 5758265 (1998-05-01), Okanobu
patent: 5832375 (1998-11-01), Leisten et al.
patent: 5878332 (1999-03-01), Wang et al.
patent: 5966666 (1999-10-01), Yamaguchi et al.
patent: 5974306 (1999-10-01), Hornak et al.
patent: 6125266 (2000-09-01), Matero et al.
patent: 6252548 (2001-06-01), Jeon
patent: 6259895 (2001-07-01), Yoshikawa et al.
patent: 6282413 (2001-08-01), Baltus
patent: 6351502 (2002-02-01), Zargari
patent: 6477148 (2002-11-01), Gardenfors et al.
patent: 2001/0015994 (2001-08-01), Nam
patent: 2003/0035491 (2003-02-01), Walton et al.
Rudell et al., “Hiughly Integrated Transceiver Architectures for Adaptive RF Communications,” University of California, Berkley, date unknown.
Behbahani et al., “An All CMOS, 2.4 GHz, Full Adaptive, Scalable, Frequency Hopped Transceiver” University of California, Los Angelese, Integrated Circuit & Systems Laboratory, date unknown.
Ellingson et al., “An 8-Element Dual-Frequency Array Receiver for Propagation Measurements near 2.4 GHz,” The Ohio State University ElectroScience Laboratory, Jul., 2001.
Gozali et al., Virginia Tech Space-Time Advanced Radio (VT-STAR), Proceedings, Radio and Wireless Conference (RAWCON) 2001.
“Parkervision Announces Successful Development of Most Integrated High Performace Wireless LAN Transceiver Chips Current Available,” Jul. 30, 2002.
PV-1000Hb 802.11b RF Transceiver Product Specification, 2002, pp. 1-11.
Madihian, et al., “A 5 GHz-Band Multifunctional BiCMOS Transceiver Chip for GMSK Modulation Wireless Systems,” IEEE Journal of Solid-State Circuits, vol. 34, No. 1, Jan., 1999.
Rudell et al., “Recent Developments in High Integration Multi-Standard CMOS Transceiver for Personal Communication Systems,” 1998 International Symposium on Lower Power Electronics, Monterey, California.
Cho et al., “Multi-Standard Monolithic CMOS RF Transceiver,” University of California, Berkeley, Jan. 8, 1996, (pp. 1-26).
Cho et al., “Multi-Standard Monolithic CMOS RF Transceiver,” University of California, Berkley, Jun. 16, 1996.
Rudell et al., “Second Generation Multi-Standard Monolithic CMOS RF Transceiver,” University of California, Berkeley, Jun. 16, 1996.
Lantz, “A 5GHz, SiGe, Monolithic WLAN Transceiver”, PCC Workshop, 1999.
Copeland et al., “5GHz SiGe HBT Monolithic Radio Transceiver with tunable filtering”, IEEE Trans on Microwave Theory and Techniques, Feb. 2000, vol. 48, No. 2.
Single Chip Bluetooth Radio Transceiver, STMicroelectronics, 2001, (2 pages).
International Search Report in International Application No. PCT/US03/12183.

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