Patent ID: 8050236

Claim:
A base transceiver station (BTS), comprising: an orthogonal frequency division multiplexing (OFDM) modulator to modulate traffic data or symbols onto OFDM tones and pilot data or symbol onto one or more OFDM tones that are interspersed among said traffic modulated OFDM tones, wherein frequency spacing between adjacent pilot modulated OFDM tones, respectively, are substantially the same, and the plurality of said traffic modulated OFDM tones are situated between adjacent pilot modulated OFDM tones; a code division multiplexing (CDM) modulator to modulate control data or symbol onto one or more CDM codes; a radio frequency (RF) modulator to modulate said modulated OFDM tones and said one or more modulated CDM codes onto an RF carrier; and an antenna to wirelessly transmit said modulated RF carrier to mobile units (MU); and a channel assignment module adapted to assign one or more traffic channels to at least one of said mobile units (MU) and assign one or more pilot channels to said at least one of said mobile units (MU), wherein one of the traffic channels assigned to the at least one of said mobile units (MU) includes a plurality of traffic modulated OFDM tones next to each other and one of the plurality of tones is next to one of the pilot channels assigned to the at least one of said mobile units (MU).