Orthogonal Frequency Dvision Multiplexing (OFDM) Symbol Formats for a Wireless Local Area Network (WLAN)
First Claim
1. A method of generating an orthogonal frequency division multiplexing (OFDM) symbol of a data unit to be transmitted via a communication channel, the method comprising:
- encoding a plurality of information bits to generate a plurality of coded bits to be included in the OFDM symbol, wherein the plurality of information bits corresponds to a first bandwidth, and wherein the OFDM symbol includes a number of data tones corresponding to a second bandwidth, the second bandwidth larger than the first bandwidth;
mapping the plurality of coded bits to a plurality constellation symbols;
mapping the plurality of constellation symbols to a first plurality of data subcarriers corresponding to a first portion of the OFDM symbol;
setting a subset of data subcarriers in the first plurality of data subcarriers to one or more predetermined values;
mapping the plurality of constellation symbols to a second plurality of data subcarriers corresponding to a second portion of the OFDM symbol;
setting a subset of data subcarriers in the second plurality of data subcarriers to one or more predetermined values; and
generating the OFDM symbol to include at least the first plurality of data subcarriers and the second plurality of data subcarriers.
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Accused Products
Abstract
In a method of generating an orthogonal frequency division multiplexing (OFDM) symbol, a plurality of information bits is encoded to generate a plurality of coded bits. The plurality of information bits corresponds to a first bandwidth, while the OFDM symbol includes a number of data tones corresponding to a second bandwidth. The coded bits are mapped to a plurality constellation symbols. The constellation symbols are mapped to a first plurality of data subcarriers corresponding to a first portion of the OFDM symbol and to a second plurality of data subcarriers corresponding to a second portion of the OFDM symbol. A subset of data subcarriers in the first plurality of data subcarriers and in the second plurality of data subcarriers are set to one or more predetermined values. The OFDM symbol is then generated to include at least the first plurality of data subcarriers and the second plurality of data subcarriers.
17 Citations
18 Claims
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1. A method of generating an orthogonal frequency division multiplexing (OFDM) symbol of a data unit to be transmitted via a communication channel, the method comprising:
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encoding a plurality of information bits to generate a plurality of coded bits to be included in the OFDM symbol, wherein the plurality of information bits corresponds to a first bandwidth, and wherein the OFDM symbol includes a number of data tones corresponding to a second bandwidth, the second bandwidth larger than the first bandwidth; mapping the plurality of coded bits to a plurality constellation symbols; mapping the plurality of constellation symbols to a first plurality of data subcarriers corresponding to a first portion of the OFDM symbol; setting a subset of data subcarriers in the first plurality of data subcarriers to one or more predetermined values; mapping the plurality of constellation symbols to a second plurality of data subcarriers corresponding to a second portion of the OFDM symbol; setting a subset of data subcarriers in the second plurality of data subcarriers to one or more predetermined values; and generating the OFDM symbol to include at least the first plurality of data subcarriers and the second plurality of data subcarriers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus, comprising:
a network interface configured to; encode a plurality of information bits to generate a plurality of coded bits to be included in an OFDM symbol, wherein the plurality of information bits corresponds to a first bandwidth, and wherein the OFDM symbol includes a number of data tones corresponding to a second bandwidth, the second bandwidth larger than the first bandwidth, map the plurality of coded bits to a plurality constellation symbols, map the plurality of constellation symbols to a first plurality of data subcarriers corresponding to a first portion of the OFDM symbol, set a subset of data subcarriers in the first plurality of data subcarriers to one or more predetermined values, map the plurality of constellation symbols to a second plurality of data subcarriers corresponding to a second portion of the OFDM symbol, set a subset of data subcarriers in the second plurality of data subcarriers to one or more predetermined values, and generate the OFDM symbol to include at least the data subcarriers corresponding to the first potion and the data subcarriers corresponding to the second portion. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
Specification