Patent ID: 8699594
Filing Date: 2014-04-15
Classification: H04B,H04L

Abstract:
1. A method for interleaving information bits in a physical layer (PHY) data unit, the method comprising: determining a channel bandwidth to be used for transmitting the PHY data unit; selecting a frequency rotation parameter N ROT corresponding to the channel bandwidth; and when utilizing more than four spatial streams to transmit the PHY data unit, for each spatial stream, (i) selecting a spatial stream constant from a set [0, 5, 2, 7, 3, 6, 1, 4] or a subset thereof depending on a number of spatial streams to be utilized, wherein each constant in the set corresponds to a respective spatial stream, and wherein the subset of the set includes at least [0, 5, 2, 7, 3], and (ii) interleaving information bits according to the selected frequency rotation parameter N ROT and the selected spatial stream constant, including determining output spatial stream indices for the information bits according to wherein r and j represent output and input bit indices, respectively, i ss is a spatial stream index N BPSCS is a number of bits per subcarrier, N CBPSS is a number of coded bits for the spatial stream, and J(i ss ) is the spatial stream constant selected from the set [0, 5, 2, 7, 3, 6, 1, 4] or the subset thereof.