Sequence estimation for space-time coded signals

摘要

In connection with transmitted space-time, trellis encoded, signals that pass through a transmission channel that is characterized by memory, improved performance is realized with a receiver that combines a decoder with an equalizer that selects the trellis transition, s, that minimizes the metric ¾ j k = r k - ˆ‘ l = L 1 + 1 L 1 h Ü j l �¢ s Ü �¢ k - l - ˆ‘ l = L 1 + 1 L + 1 h Ü j l �¢ s ^ �¢ k - l 2
where f j ( l ) is related to both the transmission channel and to the encoding structure in the transmitter, s ( k ) are the (trial) symbols according to a certain transition and s ( k ) are the symbols that were previously decided.