METHODS AND APPARATUS FOR MULTI-CARRIER COMMUNICATIONS WITH VARIABLE CHANNEL BANDWIDTH

  • US 20100322119A1
  • Filed: 08/27/2010
  • Published: 12/23/2010
  • Est. Priority Date: 01/29/2004
  • Status: Active Grant
First Claim
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1. In a variable bandwidth wireless communication system communicating under multiple different communication schemes that each have a different bandwidth, a process performed by a base station of generating an information bearing signal for wireless transmission, the process comprising:

  • utilizing by the base station a number of subcarriers to construct a variable bandwidth wireless channel;

    utilizing by the base station groups of subcarriers, wherein each group includes a plurality of subcarriers;

    maintaining a fixed spacing between adjacent subcarriers;

    adding or subtracting, by the base station, groups of subcarriers to scale the variable bandwidth wireless channel and achieve an operating channel bandwidth; and

    wherein a core-band, including a plurality of subcarrier groups, centered at an operating center frequency of the different communication schemes, is utilized by the base station as a broadcast channel carrying radio control and operation signaling, where the core-band is narrower than a smallest possible operating channel bandwidth of the system.

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