Linear Equalization For Use In Low Latency High Speed Communication Systems
AssigneeCommonwealth Scientific and Industrial Research Organisation
InventorsJoseph Abraham Pathikulangara, David Humphrey, Jian Zhang, Xiaojing Huang, Valeriy Dyadyuk
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Abstract
A communication system including a transmitter and a receiver is disclosed. The transmitter transmits frames, at least two consecutive frames containing different training sequences. The receiver receives data communicated from the transmitter over a channel. The receiver combines and jointly processes the at least two consecutive frames transmitted by the transmitter to estimate a channel state of the channel.
Claims16
A communication system comprising:
- a transmitter for transmitting frames, at least two consecutive frames containing different training sequences;
- and
- a receiver for receiving data communicated from the transmitter over a channel, the receiver combining and jointly processing the at least two consecutive frames transmitted by the transmitter to estimate a channel state of the channel.
A method for performing equalization in a communication system, the method comprising the steps of:
- applying equalization to at least a first training sequence by a time variable linear equalizer of a transmitter to produce an equalized first training sequence;
- transmitting by the transmitter the equalized first training sequence to a receiver over a channel;
- applying equalization to the equalized first training sequence by a receiver linear equalizer to produce first data;
- estimating equalization coefficients to be used by the receiver linear equalizer in future equalization from the first data;
- applying equalization to a second training sequence by a fixed linear equalizer of the transmitter to produce an equalized second training sequence;
- transmitting by the transmitter the equalized second training sequence to the receiver over the channel;
- estimating a channel state of the channel in the receiver from the equalized second training sequence;
- feeding back the channel state to the transmitter from the receiver;
- and
- estimating from the channel state equalization coefficients to be used for generating the coefficients of the time variable linear equalizer in future equalization.
A transmitter comprising:
- a time variable linear equalizer for applying equalization to a first training sequence and a data payload;
- and
- a fixed linear equalizer for applying equalization to a second training sequence.
Dependencies are inferred from the claim text.