Effective spectral efficiency, or net spectral efficiency, is a novel performance measure for overhead signaling wireless communication systems such as limited feedback wireless cellular networks, wireless ad-hoc networks.

Formulation of Effective Spectral Efficiency Edit

Effective spectral efficiency is net spectral efficiency, which is given by[1]

$ \mathcal{R}_\mathrm{eff} = (1 - T_\mathrm{OS}/T) (R - \Delta R_\mathrm{OS}(T_\mathrm{OS})) $

where $ T $ is total transmission time, $ T_\mathrm{OS} $ is the time used for overhead signaling, $R$ is the throughput performance achievable with perfect signaling and $ \Delta R_\mathrm{OS}(\tau_\mathrm{OS}) $ is the performance loss from the imperfect overhead signaling. The performance loss goes to zero if the amount of overhead signaling goes to infinity and the performance loss goes to certain constant if the amount of overhead signaling satisfies an appropriate condition.

Reference Edit

  1. N. Jindal and A. Lozano, Optimum Pilot Overhead in Wireless Communication: A Unified Treatment of Continuous and Block-Fading Channels, Submitted to IEEE Trans. Wireless Communications, March 2009