NED File src/inet/physicallayer/ieee80211/bitlevel/Ieee80211Interleaver.ned

Name	Type	Description
Ieee80211OFDMInterleaver	compound module	The Ieee80211OFDMInterleaver is defined by a two-step permutation. The first permutation ensures that adjacent coded bits are mapped onto nonadjacent subcarriers. The second ensures that adjacent coded bits are mapped alternately onto less and more significant bits of the constellation and, thereby, long runs of low reliability (LSB) bits are avoided. (IEEE 802.11, 18.3.5.7 Data interleaving)

Source code:

//
// Copyright (C) 2014 OpenSim Ltd.
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program; if not, see <http://www.gnu.org/licenses/>.
//

package inet.physicallayer.ieee80211.bitlevel;

import inet.physicallayer.contract.bitlevel.IInterleaver;

// The Ieee80211OFDMInterleaver is defined by a two-step permutation.
// The first permutation ensures that adjacent coded bits are mapped
// onto nonadjacent subcarriers. The second ensures that adjacent coded
// bits are mapped alternately onto less and more significant bits of the
// constellation and, thereby, long runs of low reliability (LSB) bits are
// avoided. (IEEE 802.11, 18.3.5.7 Data interleaving)
//
// The module has two modulation dependent parameters: number of coded bits
// per subcarrier (or constellation size, N_{BPSC}) and number of coded bits
// per symbol (N_{CBPS}).
//
// The latter is simply N_{BPSC} * number of subcarriers in a symbol.
//
module Ieee80211OFDMInterleaver like IInterleaver
{
    parameters:
        int numberOfCodedBitsPerSymbol;
        int numberOfCodedBitsPerSubcarrier;
        @class("Ieee80211OFDMInterleaverModule");
        @display("i=block/switch");
}