- Title:
- Non-Integer Bits-per-Symbol Modulation in DMT Modems
- Presenter:
- Daniel Franklin
- Date:
- July 26, 2002
- Abstract:
- Discrete multi-tone modulation is a widely deployed technology for data
transmission (as used in ADSL, 802.11a, HIPERLAN/2 etc.) which performs
well when the channel is subject to a variety of noise impairments. This
presentation will introduce a method for encoding data for transmission in
a DMT modem using a non-integral number of bits per symbol. This allows a
more precise assignment of bits per subchannel than is possible with
existing techniques, and is achieved by spreading data over a series of
constellations whose size is not a power of two. Advantages and
disadvantages of the proposed technique are discussed.
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