Precoding for a multipath channel in a MIMO system

In a multiple-input multiple-output (MIMO) communication system, a method for processing data for transmission over a multipath MIMO channel, comprising:

• coding data in accordance with one or more coding schemes to provide coded data;
• modulating the coded data in accordance with one or more modulation schemes to provide modulation symbols;
• determining an estimated response of the MIMO channel;
• deriving an equivalent channel response based on the estimated response of the MIMO channel and a response of a feed-forward filter of a decision feedback equalizer;
• precoding the modulation symbols based on the equivalent channel response to provide precoded symbols;
• and
• preconditioning the precoded symbols based on the estimated response of the MIMO channel and using spatio-temporal pulse-shaping to provide preconditioned symbols for transmission over the MIMO channel.

A memory communicatively coupled to a digital signal processing device (DSPD) capable of interpreting digital information to:

• code data in accordance with one or more coding schemes to provide coded data;
• modulate the coded data in accordance with one or more modulation schemes to provide modulation symbols;
• precode the modulation symbols based on an equivalent channel response derived based on the estimated response of a MIMO channel and a response of a feed-forward filter of a decision feedback equalizer to provide precoded symbols;
• and
• precondition the precoded symbols based on an estimated response of a multipath MIMO channel to provide preconditioned symbols for transmission over the multipath MIMO channel.

A transmitter apparatus in a multiple-input multiple-output (MIMO) communication system, comprising:

• means for coding data in accordance with one or more coding schemes to provide coded data;
• means for modulating the coded data in accordance with one or more modulation schemes to provide modulation symbols;
• means for precoding the modulation symbols based on an equivalent channel response based on the estimated response of the MIMO channel and a response of a feed-forward filter of a decision feedback equalizer to provide precoded symbols;
• means for preconditioning the precoded symbols based on an estimated response of a MIMO channel to provide preconditioned symbols;
• means for conditioning and transmitting the preconditioned symbols over the MIMO channel.

A digital signal processor for use in a multiple-input multiple-output (MIMO) communication system, comprising:

• means for coding data in accordance with one or more coding schemes to provide coded data;
• means for modulating the coded data in accordance with one or more modulation schemes to provide modulation symbols;
• means for precoding the modulation symbols based on an equivalent channel response derived based on the estimated response of a MIMO channel and a response of a feed-forward filter of a decision feedback equalizer to provide precoded symbols;
• and
• means for preconditioning the precoded symbols based on an estimated response of a MIMO channel to provide preconditioned symbols for transmission over the MIMO channel.