A method comprising: identifying at least a subset of a plurality of subcarrier(s) within a wireless channel that fail to meet a channel performance metric threshold; deactivating the identified subset of the plurality of subcarriers; and selectively distributing a power budget across a remaining subset of active subcarriers of the plurality of subcarriers according to channel throughput, said selectively distributing comprises: distributing said power budget across the remaining subset of active subcarriers according to effective noise powers, s i 2, corresponding to said remaining subset of active subcarriers, wherein an effective noise power corresponding to an active subcarrier is based on a noise power in said active subcarrier and a power gain, λ i, associated with the channel transfer function of the active subcarrier; determining a throughput for each of a plurality of combinations of modulation and coding types; identifying a maximal rate for a given set of channel characteristics; distributing the overall transmit power budget P total among the active subcarriers; and distributing said power budget across the remaining subset of active subcarriers as follows: P i = s i 2 ∑ j = l N on opt s j 2 • P total, for i = 1... N on opt wherein P i denotes a power coefficient of the i-th active subcarrier, N on opt denotes a number of said active subcarriers, and P total denotes the power budget, wherein the power gain λ i =| H i | 2, where H i is the channel transfer function for the i th subcarrier, and wherein the effective noise power s i 2 in the i th subcarrier is: s i 2 = s n, i 2 / λ i wherein s n,i 2 is the subcarrier noise power in the i th subcarrier. identifying at least a subset of a plurality of subcarrier(s) within a wireless channel that fail to meet a channel performance metric threshold; deactivating the identified subset of the plurality of subcarriers; and selectively distributing a power budget across a remaining subset of active subcarriers of the plurality of subcarriers according to channel throughput, said selectively distributing comprises: distributing said power budget across the remaining subset of active subcarriers according to effective noise powers, s i 2, corresponding to said remaining subset of active subcarriers, wherein an effective noise power corresponding to an active subcarrier is based on a noise power in said active subcarrier and a power gain, λ i, associated with the channel transfer function of the active subcarrier; determining a throughput for each of a plurality of combinations of modulation and coding types; identifying a maximal rate for a given set of channel characteristics; distributing the overall transmit power budget P total among the active subcarriers; and distributing said power budget across the remaining subset of active subcarriers as follows: P i = s i 2 ∑ j = l N on opt s j 2 • P total, for i = 1... N on opt wherein P i denotes a power coefficient of the i-th active subcarrier, N on opt denotes a number of said active subcarriers, and P total denotes the power budget, wherein the power gain λ i =| H i | 2, where H i is the channel transfer function for the i th subcarrier, and wherein the effective noise power s i 2 in the i th subcarrier is: s i 2 = s n, i 2 / λ i wherein s n,i 2 is the subcarrier noise power in the i th subcarrier. distributing said power budget across the remaining subset of active subcarriers according to effective noise powers, s i 2, corresponding to said remaining subset of active subcarriers, wherein an effective noise power corresponding to an active subcarrier is based on a noise power in said active subcarrier and a power gain, λ i, associated with the channel transfer function of the active subcarrier; determining a throughput for each of a plurality of combinations of modulation and coding types; identifying a maximal rate for a given set of channel characteristics; distributing the overall transmit power budget P total among the active subcarriers; and distributing said power budget across the remaining subset of active subcarriers as follows: P i = s i 2 ∑ j = l N on opt s j 2 • P total, for i = 1... N on opt wherein P i denotes a power coefficient of the i-th active subcarrier, N on opt denotes a number of said active subcarriers, and P total denotes the power budget, wherein the power gain λ i =| H i | 2, where H i is the channel transfer function for the i th subcarrier, and wherein the effective noise power s i 2 in the i th subcarrier is: s i 2 = s n, i 2 / λ i wherein s n,i 2 is the subcarrier noise power in the i th subcarrier. wherein P i denotes a power coefficient of the i-th active subcarrier, N on opt denotes a number of said active subcarriers, and P total denotes the power budget, wherein the power gain λ i =| H i | 2, where H i is the channel transfer function for the i th subcarrier, and wherein the effective noise power s i 2 in the i th subcarrier is: s i 2 = s n, i 2 / λ i wherein s n,i 2 is the subcarrier noise power in the i th subcarrier.