Fonte: clubedohardware.com.br<\/p>\n
A maioria dos fabricantes de radios usa dBm – potencia em decib\u00e9is – (abbreviation for the power ratio in decibels (dB)) como medida de potencia de sinal.<\/p>\n
Alguns poucos usam RSSI -potencia em porcentagem (received signal strength indication (RSSI)) como forma de medir a potencia do sinal.<\/p>\n
Neste site voc\u00ea encontra a forma de calcular e comparar as duas formas de medir a potencia dos r\u00e1dios<\/p>\n
http:\/\/www.wildpackets.com\/elements\/whitepapers\/Converting_Signal_Strength.pdf<\/p>\n
Veja a tabela comparativa RSSI x dBm<\/p>\n
Conversion for Cisco<\/p>\n
Cisco has the most granular dBm lookup table.<\/p>\n
RSSI_Max = 100<\/p>\n
Convert % to RSSI and lookup the result in the following table. The RSSI is on the left,<\/p>\n
and the corresponding dBm value (a negative number) is on the right.<\/p>\n
0 = -113<\/p>\n
1 = -112<\/p>\n
2 = -111<\/p>\n
3 = -110<\/p>\n
4 = -109<\/p>\n
5 = -108<\/p>\n
6 = -107<\/p>\n
7 = -106<\/p>\n
8 = -105<\/p>\n
9 = -104<\/p>\n
10 = -103<\/p>\n
11 = -102<\/p>\n
12 = -101<\/p>\n
13 = -99<\/p>\n
14 = -98<\/p>\n
15 = -97<\/p>\n
16 = -96<\/p>\n
17 = -95<\/p>\n
18 = -94<\/p>\n
19 = -93<\/p>\n
20 = -92<\/p>\n
21 = -91<\/p>\n
22 = -90<\/p>\n
23 = -89<\/p>\n
24 = -88<\/p>\n
25 = -87<\/p>\n
26 = -86<\/p>\n
27 = -85<\/p>\n
28 = -84<\/p>\n
29 = -83<\/p>\n
30 = -82<\/p>\n
31 = -81<\/p>\n
32 = -80<\/p>\n
33 = -79<\/p>\n
34 = -78<\/p>\n
35 = -77<\/p>\n
36 = -75<\/p>\n
37 = -74<\/p>\n
38 = -73<\/p>\n
39 = -72<\/p>\n
40 = -70<\/p>\n
41 = -69<\/p>\n
42 = -68<\/p>\n
43 = -67<\/p>\n
44 = -65<\/p>\n
45 = -64<\/p>\n
46 = -63<\/p>\n
47 = -62<\/p>\n
48 = -60<\/p>\n
49 = -59<\/p>\n
50 = -58<\/p>\n
51 = -56<\/p>\n
52 = -55<\/p>\n
53 = -53<\/p>\n
54 = -52<\/p>\n
55 = -50<\/p>\n
56 = -50<\/p>\n
57 = -49<\/p>\n
58 = -48<\/p>\n
59 = -48<\/p>\n
60 = -47<\/p>\n
61 = -46<\/p>\n
62 = -45<\/p>\n
63 = -44<\/p>\n
64 = -44<\/p>\n
65 = -43<\/p>\n
66 = -42<\/p>\n
67 = -42<\/p>\n
68 = -41<\/p>\n
69 = -40<\/p>\n
70 = -39<\/p>\n
71 = -38<\/p>\n
72 = -37<\/p>\n
73 = -35<\/p>\n
74 = -34<\/p>\n
75 = -33<\/p>\n
76 = -32<\/p>\n
77 = -30<\/p>\n
78 = -29<\/p>\n
79 = -28<\/p>\n
80 = -27<\/p>\n
81 = -25<\/p>\n
82 = -24<\/p>\n
83 = -23<\/p>\n
84 = -22<\/p>\n
85 = -20<\/p>\n
86 = -19<\/p>\n
87 = -18<\/p>\n
88 = -17<\/p>\n
89 = -16<\/p>\n
90 = -15<\/p>\n
91 = -14<\/p>\n
92 = -13<\/p>\n
93 = -12<\/p>\n
94 = -10<\/p>\n
95 = -10<\/p>\n
96 = -10<\/p>\n
97 = -10<\/p>\n
98 = -10<\/p>\n
99 = -10<\/p>\n
100 = -10<\/p>\n
Notice that this gives a range of \u201310dBm to \u2013113dBm. Bearing in mind that a Cisco card<\/p>\n
will have a Receive Sensitivity of \u201396dBm at its lowest, it is impossible to obtain an RSSI<\/p>\n
value of less than 16. Note, also, that all RSSI values greater than 93 are assigned<\/p>\n
\u201310dBm, and that there are multiple places in the table where two adjacent RSSI values<\/p>\n
are assigned the same dBm value.<\/p>\n","protected":false},"excerpt":{"rendered":"
Fonte: clubedohardware.com.br A maioria dos fabricantes de radios usa dBm – potencia em decib\u00e9is – (abbreviation for the power ratio in decibels (dB)) como medida de potencia de sinal. Alguns poucos usam RSSI -potencia em porcentagem (received signal strength indication (RSSI)) como forma de medir…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[7],"tags":[],"_links":{"self":[{"href":"https:\/\/blog.abratel.com.br\/index.php?rest_route=\/wp\/v2\/posts\/1061"}],"collection":[{"href":"https:\/\/blog.abratel.com.br\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.abratel.com.br\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.abratel.com.br\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.abratel.com.br\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1061"}],"version-history":[{"count":1,"href":"https:\/\/blog.abratel.com.br\/index.php?rest_route=\/wp\/v2\/posts\/1061\/revisions"}],"predecessor-version":[{"id":1062,"href":"https:\/\/blog.abratel.com.br\/index.php?rest_route=\/wp\/v2\/posts\/1061\/revisions\/1062"}],"wp:attachment":[{"href":"https:\/\/blog.abratel.com.br\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1061"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.abratel.com.br\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1061"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.abratel.com.br\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1061"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}