US 8,009,598 B2 · Method and system of radio resource allocation for mobile MIMO-OFDMA

Abstract

This patent discloses a method and a system of radio resource allocation for a mobile MIMO-OFDMA system, the method comprising the steps of: generating a diagonal matrix according to a channel matrix; determining a sum capacity function associated with the diagonal matrix, a plurality of transmission powers, and a plurality of subcarrier fractions; performing a first subcarrier fraction allocation by maximizing the sum capacity function according to a predetermined user capacity condition; performing a first transmission power allocation according to the first subcarrier allocation; and performing a second subcarrier fraction allocation by maximizing the sum capacity function according to the first transmission power allocation and the predetermined user capacity condition.

Claims14

Dependent claims

A method of radio resource allocation for determining the transmission powers and subcarrier fractions for mobile stations in a downlink mobile MIMO-OFDMA system with a channel matrix, a predetermined user capacity condition, and a plurality of default transmission powers, comprising the steps of:

performing a matrix operation on said channel matrix to generate a diagonal matrix;
performing a first subcarrier fraction allocation by maximizing a sum capacity function according to said default transmission powers and said predetermined user capacity condition to allocate a plurality of first subcarrier fractions of said mobile stations;
performing a first transmission power allocation according to said first subcarrier fractions of said mobile stations to allocate a plurality of first transmission powers of said mobile stations;
and
performing a second subcarrier fraction allocation by maximizing said sum capacity function according to said first transmission powers and said predetermined user capacity condition to allocate a plurality of second subcarrier fractions of said mobile stations, wherein said sum capacity function is associated with said diagonal matrix, said transmission powers, and said subcarrier fractions.

2 more elements

A system of radio resource allocation for determining the transmission powers and subcarrier fractions for mobile stations in a downlink mobile MIMO-OFDMA system with a channel matrix, a predetermined user capacity condition, and a plurality of default transmission powers, comprising:

a matrix transformer for performing a matrix operation on said channel matrix to generate a diagonal matrix;
a first subcarrier fraction allocation unit for allocating a plurality of first subcarrier fractions of said mobile stations by maximizing a sum capacity function according to said predetermined transmission powers and said predetermined user capacity condition;
a first transmission power allocation unit for allocating a plurality of first transmission powers of said mobile stations according to said first subcarrier fractions of said all mobile stations;
and
a second subcarrier fraction allocation unit for allocating a plurality of second subcarrier fractions of said mobile stations by maximizing said sum capacity function according to said first transmission powers and said predetermined user capacity condition, wherein said sum capacity function is associated with said diagonal matrix, said transmission powers, and said subcarrier fractions.

2 more elements

Dependencies are inferred from the claim text.

Method and system of radio resource allocation for mobile MIMO-OFDMA

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Method and system of radio resource allocation for mobile MIMO-OFDMA

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Abstract

Claims14