Combined channel coding and space-block coding in a...

Details Combined channel coding and space-block coding in a... Combined channel coding and space-block coding in a...

2007-03-27

2008-12-09

Kim, Kevin Y (Department: 2611)

Pulse or digital communications

Receivers

Interference or noise reduction

C375S267000

Reexamination Certificate

active

07463705

ABSTRACT:
Enhanced performance is achieved by combining channel coding with the space-time coding principles. With K synchronized terminal units transmitting on N antennas to a base station having M≧K receive antennas, increased system capacity and improved performance are attained by using a concatenated coding scheme where the inner code is a space-time block code and the outer code is a conventional channel error correcting code. Information symbols are first encoded using a conventional channel code, and the resulting signals are encoded using a space-time block code. At the receiver, the inner space-time block code is used to suppress interference from the other co-channel terminals and soft decisions are made about the transmitted symbols. The channel decoding that follows makes the hard decisions about the transmitted symbols. Increased data rate is achieved by, effectively, splitting the incoming data rate into multiple channels, and each channel is transmitted over its own terminal.

REFERENCES:
patent: 6144711 (2000-11-01), Raleigh et al.
patent: WO9741670 (1997-06-01), None
patent: WO 9923766 (1999-05-01), None
Naguib et al “space-time coded modulation for high data rate wireless communications,” Global Telecommunicaitons Conf. Nov. 1997, pp. 102-109.
Tarokh et al “space-time codes for high data rate wireless communication: performance criterion and code construction” IEEE Trans, on Info Theory, IEEE, vol. 44, No. 2, Mar. 1998.

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