DOUBLE ITERATIVE MIMO RECEIVER

摘要

A multiple-input multiple-output (MIMO) receiver comprises a MIMO frequency-domain equalizer, which comprises a MMSE filter for mitigating inter-symbol interference and an adder for mitigating inter-antenna interference, a MIMO detector and a MIMO decoder for processing a received MIMO signal and for estimating transmit bits. The receiver comprises a feedback path from the decoder to the detector for providing soft-information on the transmit bits to the detector and an additional feedback path from the decoder to the MIMO frequency-domain equalizer for providing soft-information to the MMSE filter and to the adder of the equalizer.

主权项

1. A multiple-input multiple-output (MIMO) receiver for receiving and decoding at least two receive signals representing a block of symbols comprising:
a frequency-domain equalizer comprising an adaptive filter configured to filter the block of symbols to produce a filtered block of symbols, a vector calculator configured to calculate a vector of weighted estimated symbols, and an adder configured to add the vector of weighted estimated symbols to the filtered block of symbols; a MIMO detector coupled to the output of the frequency-domain equalizer; a decoder configured to determine likelihood values of transmit bits, the decoder being coupled to the output of the MIMO detector; and a first feedback path from the decoder to the frequency-domain equalizer configured to provide the covariance of the estimated received symbols to the adaptive filter and configured to provide the covariance and the expectation values of the estimated symbols to the vector calculator for calculating the vector weighted estimated symbols.