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US 2005/0088959 A1Published application
Rate selection for a multi-carrier MIMO system
AssigneeQUALCOMM Incorporated
InventorTamer Kadous
Life of this patent
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AssigneeQUALCOMM Incorporated
InventorTamer Kadous
Estimating the term…
To select a rate for data transmission in a multi-carrier MIMO system with a multipath MIMO channel, a post-detection SNR SNRl(k) for each subband k of each spatial channel l is initially determined and used to derive a constrained spectral efficiency Sl(k) based on a constrained spectral efficiency function fsiso(SNRl(k), M) of SNR and modulation scheme M. An average constrained spectral efficiency Savg for all subbands of all spatial channels used for data transmission is next determined based on the constrained spectral efficiencies for the individual subbands/spatial channels. An equivalent SNR needed by an equivalent system with an AWGN channel to support a data rate of Savg is determined based on an inverse constrained spectral efficiency function fsiso−1(Savg, M). A rate is selected for the multi-carrier MIMO system based on the equivalent SNR. The selected rate is the highest rate among all supported rates with a required SNR less than or equal to the equivalent SNR.
A method of selecting a rate for data transmission in a multi-carrier multiple-input multiple-output (MIMO) communication system, comprising:
An apparatus in a multi-carrier multiple-input multiple-output (MIMO) communication system, comprising:
An apparatus in a multi-carrier multiple-input multiple-output (MIMO) communication system, comprising:
A processor readable media for storing instructions operable in an apparatus to:
Dependencies are inferred from the claim text.