1. A base station of a wireless network for transmitting subscriber datastreams to corresponding ones among a plurality of remote stations located within the network, the base station comprising: spatially separate transmitters to transmit selected substreams of each subscriber datastream to corresponding ones among the plurality of remote stations on an assigned channel of a multiple access protocol; logic to assign an available channel on which to transmit each subscriber datastream; a mobility detector to determine a mobility of each of the plurality of remote stations and to generate a mobility signal; and a training module responsive to the mobility signal for varying at least one of an injection interval and a duration of a training sequence into the transmissions of the spatially separable transmitters.