Method of allocating subbands to streams of a multichannel...

Details Method of allocating subbands to streams of a multichannel... Method of allocating subbands to streams of a multichannel...

2011-01-04

2011-01-04

Shah, Chirag G (Department: 2477)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

Reexamination Certificate

active

07864728

ABSTRACT:
A method of allocating a plurality of subbands to a plurality of streams of a multichannel link in a multicarrier modulation communications system, each stream being successively defined in a communications frame of said multichannel link by a number Mjof bits to be transmitted and a noise margin Γj. Each subband is associated with a normalized signal-to-noise ratio on the multichannel link. The subbands are classified in a specific order of the normalized signal-to-noise ratios. An energy Eiper subband is determined by a binary allocation algorithm. For each stream taken in the order of said frame, a number Njof consecutive subbands taken in the order of normalized signal-to-noise ratios is allocated so that the sum of the numbers nijof bits in each subband allocated to each stream is equal to Mjwhere:Mj=∑i=1Nj⁢nijand nij=log2(1+El·(SNR0)i/ΓJ).

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