Способы управления в сетях по стандату 802.11, страница 3

совместим с a и b.

стандарт g не определят расстония, а определяет отклонения от стандарта a при 11МБит/сек.

например:

11МБит/сек  расстояние примерно 20-30% от стандарта a.

для малых скоростей 3,6,9 расстояние примерно 160%,

Дополнения к 802.11g возможнык скорости и типы модуляции

Скорость Mbit/sec     Тип модуляции (обязательно)        Тип мрдуляции (допустимо)

1                                             Последов. Бркера                                        -

2                                             -||-||-||-                                                

5,5                                          CCK                                                              PBCC

6                                             OFDM                                                                     CCK-OFDM

9                                             -                                                                     OFDM,CCK-OFDM

11                                           CCK                                                              PBCC

12                                           OFDM                                                           CCK-OFDM

18                                           -                                                                     OFDM-CCK,OFDM

22                                           -                                                                     PBCC

24                                           OFDM                                                           CCK-OFDM

33                                           -                                                                     PBCC

36                                           -                                                                     OFDM,CCK-OFDM

48                                           -                                                                     -||-||-||-

54                                           -                                                                     -||-||-||-

Построение информайионных систем на базе 802.16

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