Equalization of transmit diversity space-time coded signals

Abstract

A method executed in a receiver that combines a decoder with an equalizer in a single module, comprising receiving at time k a signal r(k) in the receiver. Selecting as a signal transmitted by a transmitter a signal that minimizes the following equation metric ξ j ⁡ ( k ) =  r ⁡ ( k ) - ∑ l = L 1 + 1 L 1 ⁢ h _ j ⁡ ( l ) ⁢ s ~ ⁡ ( k - l ) - ∑ l = L 1 + 1 L + 1 ⁢ h ~ j ⁡ ( l ) ⁢ s ^ ⁡ ( k - l )  2 where {tilde over (h)}j(l) is related to both the transmission channel and to the encoding structure in the transmitter, {tilde over (s)}(k) is a trial symbol specified by a selected trellis transition and ŝ(k) is a symbol that was previously decided. Applying the selected signal to the decoder to decode received symbols.

Dependencies are inferred from the claim text.