Patent ID: 8588276

Claim:
An OFDM (Orthogonal Frequency Division Multiplexed) transmitter, comprising: a first antenna; at least one additional antenna; and an encoder operable: to define a first plurality of OFDM symbols to contain a plurality of clusters, each cluster comprising a plurality of sub-carriers over a plurality of OFDM symbol durations; to spread at least one of data and pilots within each cluster using code division multiplexing (CDM); to provide the first plurality of OFDM symbols to the first antenna for transmission by the first antenna; and for each antenna of the at least one additional antenna: to define a respective plurality of OFDM symbols to contain a plurality of clusters, each cluster comprising a plurality of sub-carriers over a plurality of OFDM symbol durations; to spread at least one of data and pilots within each cluster using a respective CDM code; and to provide the respective plurality of OFDM symbols to a respective antenna of the at least one additional antenna for transmission.