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Doc.: IEEE 802.11-13/1110r1 September 2013 Submission Beam codebook design scheme for IEEE802.11aj DU GuanglongSlide 1 Date: 2013-09-16 Presenter:

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Presentation on theme: "Doc.: IEEE 802.11-13/1110r1 September 2013 Submission Beam codebook design scheme for IEEE802.11aj DU GuanglongSlide 1 Date: 2013-09-16 Presenter:"— Presentation transcript:

1 doc.: IEEE 802.11-13/1110r1 September 2013 Submission Beam codebook design scheme for IEEE802.11aj DU GuanglongSlide 1 Date: 2013-09-16 Presenter:

2 doc.: IEEE 802.11-13/1110r1 September 2013 Submission Author List DU GuanglongSlide 2

3 doc.: IEEE 802.11-13/1110r1 September 2013 Submission Abstract Introduction of beam codebook Proposed N-phase beam codebook design Conclusion Slide 3 DU Guanglong

4 doc.: IEEE 802.11-13/1110r1 September 2013 Submission Introduction of Beam codebook (1/5) For 60GHz communication, use of array antenna can get a high antenna gain and realize spatial reuse. Taking into consideration of implementation complexity, it is suitable to consider a beam- switching system or a phased-array for 60GHz communication. DU Guanglong Slide 4

5 doc.: IEEE 802.11-13/1110r1 September 2013 Submission Introduction of Beam codebook (2/5) System model A codebook is a matrix W where each column specifies the beam former vector or combiner vector to be used. The phase array has widely used in 60GHz millimeter communication. DU Guanglong Slide 5

6 doc.: IEEE 802.11-13/1110r1 September 2013 Submission Introduction of Beam codebook (3/5) The codebook beam vectors are given by the column vectors of the matrix shown in the following equation (K≥M) * Where m denotes the antenna index, k denotes the beam index, and M is the total number of antennas, K is the total number of beams. Function fix(x) returns the biggest integer smaller than or equal to its argument, and mod(x,y) is the modulo function and is defined as x– fix(x/y)×y. There are 4 phases (0°,±90°,180°) used in this codebook. The gain loss at the intersections of two adjacent beams is less than 1 dB when K≥2M * Slide 6 DU Guanglong Reference: * 1)Wang J, Lan Z, Pyo C, et al.. Beamforming codebook design and performance evaluation for millimeter-wave WPAN. Proc. of the IEEE Vehicular Technology Conference (VTC2009 Fall) 2)IEEE 802.15.3c technical specification (1)

7 doc.: IEEE 802.11-13/1110r1 September 2013 Submission Introduction of Beam codebook (4/5) Left figure: the 5 th and 12 th beam patterns when M=8, K=16. Right figure: all the 16 beam patterns when M=8, K=16. Slide 7 DU Guanglong

8 doc.: IEEE 802.11-13/1110r1 September 2013 Submission Introduction of Beam codebook (5/5) Summary of the beam codebook (1) in slide 6: –The codebook matrix consists of only 4 phases, and lacking flexibility; –Gain loss of main lobe will be increased with the increase of antenna elements; –The side lobe level is high; –The codebook can be used in 2-D array by use separable codebooks along the polar angle direction and azimuth angle direction. Slide 8 DU Guanglong

9 doc.: IEEE 802.11-13/1110r1 September 2013 Submission The Proposed N-phase beam codebook design (1/5) We extend the beam codebook further, and give the following equation: Here, m, k, M, K and functions fix(x), mod(x,y) is defined as before. N denotes the number of phases of the codebook, that is to say, this codebook is consists of N phases but not 4 phases – codebook (1) used by IEEE802.15.3c. N is a user-defined parameter, and the more phases of the codebook (N), the better of the performance. Slide 9 DU Guanglong (2)

10 doc.: IEEE 802.11-13/1110r1 September 2013 Submission The Proposed N-phase beam codebook design (2/5) Left figure: the 2 nd beam of codebook (1) with M=8, K=16 (red line), and the 2 nd beam of N-phase codebook with M=8, K=16, N=16 (blue line); Right figure: the 11 th beam of codebook (1) with M=8, K=16 (red line), and the 2 nd beam of N-phase codebook with M=8, K=16, N=16 (blue line); Slide 10 DU Guanglong

11 doc.: IEEE 802.11-13/1110r1 September 2013 Submission The Proposed N-phase beam codebook design (3/5) Left figure: all the 16 beam patterns of codebook (1) with M=8 and K=16; Right figure: all the 16 beam patterns of Proposed N-phase codebook with M=8, K=16 and N=8; Slide 11 DU Guanglong

12 doc.: IEEE 802.11-13/1110r1 September 2013 Submission The Proposed N-phase beam codebook design (4/5) For the parameter N, we have conclusions as: –N=4, the codebook is same as codebook (1) in slide 6; –Gain loss of main lobe and side lobe level will decreases with the increase of N; –When N≥K, the gain loss of main lobe and side lobe level are change little. DU Guanglong Slide 12 N-phase codebook’s max gain loss of main lobe with different N when M=8 N-phase codebook’s max gain loss of main lobe with different N when M=16

13 doc.: IEEE 802.11-13/1110r1 September 2013 Submission The Proposed N-phase beam codebook design (5/5) Some performance data for codebook (1) with M=8 and K=16 (here denoted by 3c), and N-phase codebook with M=8, K=16, N=8 (here denoted by 8-phase). –HPBW: half power beam width; SLL: side lobe level; G max : maximum gain of main lobe DU Guanglong Slide 13 IndexHPBWSLL (dB)G max (dB) 3c8-phase3c8-phase3c8-phase 054.6 o -12.8 9.03 127.2 o 29.6 o -7.2-11.28.258.87 219.4 o 20 o -6.7-12.88.389.03 316.8 o 16.6 o -9.0-11.28.188.87 415 o -12.8 9.03 513.6 o 14 o -7.2-11.28.258.87 613.2 o 13.4 o -6.7-12.88.379.03 713.2 o -9.0-11.28.188.87 813 o -12.8 9.03 913 o 13.2 o -7.2-11.28.258.87 1013.4 o -6.7-12.88.389.03 1114 o -8.9-11.28.188.87 1215 o -12.8 9.03 1316.8 o -7.2-11.28.258.87 1420.2 o 20 o -6.7-12.88.389.03 1529.6 o 32.4 o -9.0-11.28.188.87

14 doc.: IEEE 802.11-13/1110r1 September 2013 Submission Conclusion Proposed a N-phase codebook: –N-phase codebook consists of N phases, and N can be defined by user, which gives the codebook more flexibility; –N should be less than or equal to the number of beam patterns K; –The N-phase codebook can demonstrate a better performance than the codebook used in IEEE802.15.3c. The proposed N-phase codebook is an informative procedure to obtain a beam code book for vendor’s choice in their implementation. It can be considered to be included in the appendix DU Guanglong Slide 14

15 doc.: IEEE 802.11-13/1110r1 September 2013 Submission References [1] 11-09-0334-08-00ad-channel-models-for-60-ghz-wlan-systems; [2] 11-12-0682-00-cmmw-introduction-of-cmmw-par-and-5c; [3] 11-12-0140-09-cmmw-ieee-802-11-cmmw-sg-par; [4] 15-08-0361-00-003c-beamforming; Slide 15 DU Guanglong

16 doc.: IEEE 802.11-13/1110r1 September 2013 Submission Thank you ！ Slide 16 DU Guanglong

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