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This code gives a simple IWF algorithm to show that it is a suboptimal scheme.
IWF is a suboptimal power allocation scheme that tries to optimize power per user. Each user tries to optimize its own power in a more greedy manner while ignoring the interference impact on other users. A draw back can be that all users keep increasing their individual powers to get maximum throughput while increasing overall interference in the Network significantly making the life of users with poor coverage more difficult.
A more optimal scheme is OSB which is called Optimal spectrum balancing. This is more optimal since it tries to do an exhaustive search from a discrete set of power combinations to maximize the overall channel system throughput rather than each individual user separately. This results in a better model that acheives overall channel throughput over all users which is higher than IWF. The code for OSB is also given and the two techniques are
matlab
注水
控制
优化
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