Measurement of the interference rejection capability of smart antennas on mobile telephones

We report investigations into the interference rejection capabilities of a dual antenna system on a mobile handset prototype for the 1800 MHz band. The performance evaluation is done by using a simulated incoming field on the handset antennas and by downlink measurements in an indoor environment. Complex signal samples are used in order to investigate the interference rejection gain with different diversity combining schemes and with one and two interferers present.

[1]  N. Secord,et al.  A diversity co-channel interference canceller for AMPS cellular systems , 1998, VTC '98. 48th IEEE Vehicular Technology Conference. Pathway to Global Wireless Revolution (Cat. No.98CH36151).

[2]  Donald C. Cox,et al.  Low-complexity diversity combining algorithms and circuit architectures for co-channel interference cancellation and frequency-selective fading mitigation , 1996, IEEE Trans. Commun..

[3]  M. Schwartz,et al.  Communication Systems and Techniques , 1996, IEEE Communications Magazine.

[4]  C. Braun,et al.  Antenna diversity for mobile telephones , 1998, IEEE Antennas and Propagation Society International Symposium. 1998 Digest. Antennas: Gateways to the Global Network. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.98CH36.

[5]  M. Doetsch,et al.  Wideband TDMA based radio interface for high bit rate packet access , 1998, VTC '98. 48th IEEE Vehicular Technology Conference. Pathway to Global Wireless Revolution (Cat. No.98CH36151).

[6]  Yahya Rahmat-Samii,et al.  Performance analysis of antennas for hand-held transceivers using FDTD , 1994 .

[7]  R. T. Compton.  Adaptive Antennas: Concepts and Performance , 1988 .

[8]  M.A. Jensen,et al.  Indoor measurement of handset dual-antenna diversity performance , 1997, 1997 IEEE 47th Vehicular Technology Conference. Technology in Motion.

[9]  W. K. Lam,et al.  A low-complexity antenna diversity receiver suitable for TDMA handset implementation , 1997, 1997 IEEE 47th Vehicular Technology Conference. Technology in Motion.

[10]  R.G. Vaughan,et al.  Antenna diversity in mobile communications , 1987, IEEE Transactions on Vehicular Technology.

[11]  R. Ramesh,et al.  The evolution of IS-136: voice service , 1998, VTC '98. 48th IEEE Vehicular Technology Conference. Pathway to Global Wireless Revolution (Cat. No.98CH36151).