Link Budget Calculation - Tranzeo Link Budget Whitepaper
July 14, 2022 | Author: Anonymous | Category: N/A
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A H ? . . . A A , , , , , ,, , . F , . . . .
() , F . : (B) = (B) + G (B) − L (B) I ( ), ), . . . .
()
O , . H, , 0.25B 0.25B 3 . F 3 LM400 2 , 0.75B .
5.8
91.53
100.05
107.72
2
97.56
106.07
113.74
3
101.08
109.60
117.26
4
103.58
112.10
119.76
5
105.51
114.03
121.70
10
111.53
120.05
127.72
20
117.56
126.07
133.74
30
121.08
129.60
137.26
40
123.58
132.10
139.76
50
125.51
134.03
141.70
). I , ( ). FL F L . I , , .
2.4
1
900
1: ()
FL :
: ( ( ) (3 /)) (3 108 /
,, N, :
1 FL 900MH, 2.4GH, 5.8GH .
. 19473 F , M, BC, C 3 24 : 604.460.6002 F: 604.460.6005 F: 1.866.872.6 1.866.872.6936 936 .. 2010 . A . I. A .
301401
A
M . . A . . O , , . I , .
F 30B, 30 B, .
&
1/2
AGE 2
()
()
6
8
3/4
9
9
1/2
12
11
3/4
18
13
16A 1/2
24
16
16A 3/4
36
20
64A 2/3
48
24
64A 3/4
54
25
Table 2: Data Rates vs. Minimum SNR
() M M , . I . . M 64A 64AM M N, BK N, . F , N N ( (N N)) B E (BE). F . , 20B 30B . 3 F F M M, , . A (%)
()
90
8
99
18
99.9 99.99 99.999
28
38
48
2 2 N . . N .
802 802.1 .16 6 (80 (802.1 2.162 6200 004) 4) MA MA 3.5G 3.5GH, H, 3.65GH, 3.65GH, 5.8G 5.8GH H B B . . A , 90 900MH 0MH, , 2.4GH, 4.9GH, 5.8GH 802.11// 802.11 F A , CE, F D D B, B, M M A A .
Table 3: Rayleigh Fading Model
. 19473 F , M, BC, C 3 24 : 604.460.6002 F: 604.460.6005 F: 1.866.872.6 1.866.872.6936 936 .. 2010 . A . I. A .
301401
A
AGE 3
524 . : D: 5 F: 5.8 F: L : () L: : 2 524 A: A: F, . I , , . 2 524, . . I 2 , 2 , , .
C 524 , . + 23,, 24 +23 24.. , F , (FL). (FL). FL 5 121.70B 121.70B 5.8GH 5.8GH 1. 1. : (B)
= (B) + A A G (B) + A A G (B) =
23
+
=
50.70
24
+
24
FLL (B) F
– 121.70
3. N N 54MB 25B, 3. N, : M M C C N N (B) (B)
=
( (B) B)
=
50. 5 0.70 70
=
75. 7 5.70 70
N N ( (B) B)
– 25
N, N, . 20B : L L M M (B (B))
=
(B (B) )
(B (B) )
=
50.70
(72)
=
21..30 21
524 524 72B 72B 54M, 54M,
A 5, 54M 99% F 3. M 3.
. 19473 F , M, BC, C 3 24 : 604.460.6002 F: 604.460.6005 F: 1.866.872.6 1.866.872.6936 936 .. 2010 . A . I. A .
301401
A
AGE 4
. :
The receive sensitivity of the radio is different for the different modulation and coding rates. Tab ablle 4 below shows what the receive sensitivity is for the TR-5plus-24 radio, radio, and the estimated maximum distance. These calculations assume 20dB link margin, and that sufficient SNR is available for the different modulation schemes, as per Table 2. The maximum TCP and UDP throughputs of the TR-5plus-24 were tested using 20MHz, and found to be around 22Mbps and 28Mbps, respectively.
6
9
12
18
24
36
48
54
()
90
88
86
84
82
78
75
72
()
70
68
66
64
62
58
55
52
() 141
139
137
135
133
129
126
123
36.65
29.11
23.12
18.37
11.59
8.20
5.81
()
46.14
Table 4: TR-5plus-24 Data Rates vs. Link Distance
I. N L A
Tranzeo Wireless Technologies Inc. – Excel Link Budget Calculator
A I. (:) , . ' 2000, ' , , , . ' , MA , , , , , , , , , , , , .
. 19473 F , M, BC, C 3 24 : 604.460.6002 F: 604.460.6005 F: 1.866.872.6 1.866.872.6936 936 .. 2010 . A . I. A .
301401
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