Apparatus for time interleaving and method using the same
AssigneeElectronics and Telecommunications Research Institute
InventorsBo-Mi Lim, Sun-Hyoung Kwon, Sung-Ik Park, Jae-Young Lee, Heung-Mook Kim, Nam-Ho Hur
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Abstract
An apparatus and method for time interleaving corresponding to hybrid time interleaving mode are disclosed. An apparatus for time interleaving according to an embodiment of the present invention includes a twisted block interleaver configured to perform intra-subframe interleaving corresponding to time interleaving blocks; and a convolutional delay line configured to perform inter-subframe interleaving using an output of the twisted block interleaver.
Claims8
An apparatus for time deinterleaving, comprising:
- an inverse convolutional delay line configured to perform inter-subframe deinterleaving that corresponds to an inverse process of inter-subframe interleaving performed by a convolutional delay line of a transmitter;
- and
- a twisted block deinterleaver configured to perform intra-subframe deinterleaving that corresponds to an inverse process of intra-subframe interleaving performed by a twisted block interleaver of the transmitter,
- wherein the inter-subframe interleaving is performed by using an output of the intra-subframe interleaving at the transmitter,
- wherein the convolutional delay line reads only data cells except for virtual cells from the twisted block interleaver, and
- wherein after each row of the data cells is written from the twisted block interleaver, the convolutional delay line generates new virtual cells prior to switches moving to a next branch.
A method of time deinterleaving, comprising:
- performing inter-subframe deinterleaving that corresponds to an inverse process of inter-subframe interleaving performed by a convolutional delay line of a transmitter;
- and
- performing intra-subframe deinterleaving that corresponds an inverse process of intra-subframe interleaving performed by a twisted block interleaver of the transmitter,
- wherein the inter-subframe interleaving is performed by using an output of the intra-subframe interleaving at the transmitter,
- wherein the convolutional delay line reads only data cells except for virtual cells from the twisted block interleaver, and
- wherein after each row of the data cells is written from the twisted block interleaver, the convolutional delay line generates new virtual cells prior to switches moving to a next branch.
Dependencies are inferred from the claim text.