Spectral efficiency and optimal medium access control of random access systems over large random spreading CDMA

Abstract

This paper analyzes the spectral efficiency as a function of medium access control (MAC) for large random spreading CDMA random access systems that employ a linear receiver. It is shown that located at higher than the physical layer, MAC along with spreading and power allocation can effectively perform spectral efficiency maximization and near-far mitigation.

arXiv commentTo appear in IEEE Trans. on Communications