An Iterative Power Allocation Scheme for Spread Spectrum Wireless Systems

Abstract — This paper formulates a new optimization problem for direct-sequence spread spectrum systems by considering the joint transmitted power and link quality in a functional form. Link quality is measured in terms of signal interference to noise ratio including the cross correlations and multipath effect. By solving this optimization problem a new distributed power control scheme is proposed which guarantees a global optimum in all practical cases. The implementation of the proposed procedure can be simply performed locally and the scheme fits well into low-power radios. I