US 6,115,427 · Granted 2000-09-05
Method and apparatus for data transmission using multiple transmit antennas
A method and apparatus for increasing the data rate and providing antenna diversity using multiple transmit antennas is disclosed. A set of bits of a digital signal are used to generate a codeword. Codewords are provided according to a channel code. Delay elements may be provided in antenna output channels, or with suitable code construction delay may be omitted. n signals represent n symbols of a codeword are transmitted with n different transmit antennas. At the receiver MLSE or other decoding is used to decode the noisy received sequence. The parallel transmission and channel coding enables an increase the data rate over previous techniques, and recovery even under fading conditions. The channel coding may be concatenated with error correction codes under appropriate conditions.
Patent details
- Publication number
- US 6,115,427
- Filing date
- 1997-04-25
- Grant date
- 2000-09-05
- Assignee
- At&T Corp.
- Inventor(s)
- CALDERBANK; ARTHUR ROBERT, NAGUIB; AYMAN F., SESHADRI; NAMBIRAJAN, TAROKH; VAHID
- CPC class
- C07K14/78
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