Transmitter using linear space-time codes for wide-band...

Details Transmitter using linear space-time codes for wide-band... Transmitter using linear space-time codes for wide-band...

H - Electricity

04

B

H04B 7/04 (2006.01)

Patent

CA 2616387

A linear space-time LST encoder in a transmitter transmitting data over a wireless communications channel. Data are distributed over plural transmit antennas, plural time intervals, or both, according to a space-time matrix containing LST codes. The encoder comprises means for splitting each block of information bits into q equal length sub-blocks; means for mapping each sub-block to a symbol s i, i = 1, ... q, from a complex constellation; means for calculating a set of t x m dispersion matrices A i for sending a signal (see above formula) over t time slots and m transmit antennas; means for selecting a slope S0 of the wireless communications channel capacity. The slope S0 being a function of the dispersion matrices A i, and optimizing S0 for providing an optimized set of dispersion matrices under a power efficient transmission system constraint.

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