User Manual Part 1

Wi-Fi Array

Installing the Wi-Fi Array 75

Multiple Data Streams — Spatial Multiplexing

Spatial Multiplexing transmits completely separate data streams on different

antennas (in the same channel) that are recombined to produce new 802.11n data

rates. Higher data rates are achieved by splitting the original data stream into

separate data streams. Each separate stream is transmitted on a different antenna

(using its own RF chain). MIMO signal processing at the receiver can detect and

recover each stream. Streams are then recombined, yielding higher data rates.

Figure 24. Spatial Multiplexing

Spatial multiplexing can double, triple, or quadruple the date rate, depending on

the number of transmit antennas used. You can configure the number of chains

(i.e., streams) separately for transmitting and receiving. By default, the Array uses

three chains for transmitting and receiving (see “Global Settings .11n” on

page 291).

Rx 1

Rx 2

Transmitter

Data Stream Data Stream

Receiver

Tx 1

Tx 2