SMART ANTENNAS

... 24 8-6 4 2-1 773 fax: 24 8-6 4 2-6 138 Canada Derr Media Group 84 7-6 1 5-1 921 fax: 84 7-7 3 5-1 457 U.K The Powers Turner Group +4 4-2 0 7-5 9 2-8 331 fax: +4 4-2 0 7-6 3 0-9 922 France and Switzerland PEM-PEMA +3 3-1 -4 6-3 7-2 117 ... PEM-PEMA +3 3-1 -4 6-3 7-2 117 fax: +3 3-1 -4 7-3 8-6 329 Germany Publicitas Germany GmbH +4 9-2 1 1-8...

Ngày tải lên: 12/05/2014, 16:18

... critical implementation aspects for the adoption of smart antennas in future wireless systems We would like to thank the authors, the reviewers and Hindawi staff for their efforts in the preparation ... antenna elements Bounds on capacity for Rayleigh fading channels highlight the benefits of subarray formation while low-complexity algorithms for grouping antennas into subarrays...

Ngày tải lên: 22/06/2014, 00:20

... publisher Introduction to Smart Antennas Constantine A Balanis, Panayiotis I Ioannides www.morganclaypool.com ISBN: 15 982 917 69 ISBN: 97 815 982 917 66 paperback paperback ISBN: 15 982 917 77 ISBN: 97 815 982 917 73 ... 10 1 The Affine-Projection (AP) Algorithm 10 2 The Quasi-Newton (QN) Algorithm 10 4 Integration and Simulation of Smart Antennas ... 11 0 7.4 Adaptive S...

Ngày tải lên: 13/08/2014, 02:20

... Subscribers 20 00 Millions of Units 600 500 400 300 20 0 100 1998 1999 20 00 20 01 20 02 2003 20 04 20 05 20 06 Year 1500 1000 500 1998 1999 20 00 20 01 20 02 2003 20 04 20 05 20 06 Year FIGURE 2. 2: (a) Annual ... frequency-selectivity and ISI (Inter INTRODUCTION TO SMART ANTENNAS 1.0 0.8 Normalized Amplitude 20 0.6 0.4 0 .2 0.0 -0 .2 -0 .4 -8 -7 -6...

Ngày tải lên: 13/08/2014, 02:21

... easy to obtain a suitable site INTRODUCTION TO SMART ANTENNAS AWGN channel MRC diversity -1 10 -2 10 L=1 -3 10 Pb 30 10 -4 L=2 -5 10 10 L=4 -6 L =3 -7 10 10 15 20 b 25 30 35 40 (dB) FIGURE 3. 6: ... fixed to the optimum direction (toward which the signal -to- noise ratio is maximized) In this direction the maximum of the pattern is ideally toward the desire...

Ngày tải lên: 13/08/2014, 02:21

... network INTRODUCTION TO SMART ANTENNAS Gain (dB) -2 0 -4 0 -6 0 -8 0 -1 80 -1 50 -1 20 -9 0 -6 0 -3 0 30 60 90 120 150 180 (degrees) FIGURE 4. 26: Normalized radiation pattern for a non-weighted two-sensor ... M1 , M2 T (4. 27) SMART ANTENNAS 63 Gain (dB) -2 0 -4 0 -6 0 -8 0 -1 80 -1 50 -1 20 -9 0 -6 0 -3 0 30 60 90 120 15...

Ngày tải lên: 13/08/2014, 02:21

... straightforward, provided that is known INTRODUCTION TO SMART ANTENNAS 35 MUSIC spatial spectrum (dB) 82 30 25 20 15 10 -9 0 -7 5 -6 0 -4 5 -3 0 -1 5 15 30 45 60 75 90 (degrees) FIGURE 5. 4: Spatial spectrum of the ... (5. 10) 74 INTRODUCTION TO SMART ANTENNAS Usually, s(t) is referred to as the desired signal portion of x(t) The three most imp...

Ngày tải lên: 13/08/2014, 02:21

... longer hold INTRODUCTION TO SMART ANTENNAS 30 Classical beamforming Adaptive beamforming 20 SNOI 10 Beampattern (dB) 90 SNOI SOI -1 0 -2 0 -3 0 -4 0 -5 0 -6 0 -9 0 -7 5 -6 0 -4 5 -3 0 -1 5 15 30 45 60 75 90 ... such low-complexity algorithms are the binormalized data-reusing least mean-square (BNDRLMS) [ 162 ], the normalized new data-reusing (NNDR)...

Ngày tải lên: 13/08/2014, 02:21

... microstrip of Fig 7. 1 20.5 21 110 INTRODUCTION TO SMART ANTENNAS 30 30 E-plane H-plane 60 60 90 90 -1 0 -2 0 -3 0 dB -3 0 -2 0 -1 0 FIGURE 7. 3: Single element microstrip patch radiation patterns; E-plane (φ ... 108 INTRODUCTION TO SMART ANTENNAS y0 z x0 L t W W L dy dx E-plane x-z plane H-plane y-z plane - y Dx Dy x Dx = 54 .74 7 mm Dy = 54.562 mm dx...

Ngày tải lên: 13/08/2014, 02:21

... penetration into the cellular market with great promising potentials in the future due to their intrinsic advantages 1 38 INTRODUCTION TO SMART ANTENNAS over earlier access techniques such as time-division ... Nevertheless, extremely good Signal -to- Noise-ratios are required to achieve this goal Multiple antennas on the terminal side are believed to increase the rate further...

Ngày tải lên: 13/08/2014, 02:21

... gains of up to 50% in three-sector sites and over 90 % in six-sector sites for CDMA For further detail on Metawave and its products refer to [227, 228] Reports from Metawave claim up to a three ... 154 INTRODUCTION TO SMART ANTENNAS (b) (a) (c) FIGURE 9. 4: Smart antenna developed by ASCOM AR&T (a) Single antenna element, (b) PCMCIA card with antenna array, and (c) Smart a...

Ngày tải lên: 13/08/2014, 02:21

... 2001 doi :10. 1002 /109 8-2 760(20 0102 20)28:43.0.CO;2-P [112] H T Hui, “Improved compensation for the mutual coupling effect in a dipole array for direction finding,” IEEE Trans Antennas ... 686–687, 1948 [132] P Stoica and R Moses, Introduction to Spectral Analysis Upper Saddle River, NJ: Prentice-Hall, 1997 168 INTRODUCTION TO SMART ANTENNAS [133] T Svantesson, Antennas a...

Ngày tải lên: 13/08/2014, 02:21