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US 2002/0054650 A1Published application
Low complexity maximum likelihood detection of concatenate space codes for wireless applications
AssigneeAT&T Wireless Services, Inc.
InventorsSiavash Alamouti, Patrick Poon, Vahid Tarokh
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Abstract
Good transmission characteristics are achieved in the presence of fading with a transmitter that employs a trellis coder followed by a block coder. Correspondingly, the receiver comprises a Viterbi decoder followed by a block decoder. Advantageously the block coder and decoder employ time-space diversity coding which, illustratively, employs two transmitter antennas and one receiver antenna.
Claims17
A transmitter comprising:
- a trellis encoder, and
- a block encoder responsive to said trellis encoder and adapted to feed a plurality of antennas.
A receiver comprising:
- a receiving block combiner, and
- a Viterbi decoder responsive to output signals of said block decoder.
Dependencies are inferred from the claim text.