Bit-wise exponential ESM (BE-ESM) method for accurate link level performance evaluation

This paper investigates effective SINR mapping (ESM) methods for link abstraction (or channel quality evaluation) used in system level performance simulation. Among all existing ESM methods, the mean mutual information per-bit (MMIB) ESM has been shown to be superior in terms of high accurate block error rate (BLER) prediction and supporting multiple modulation schemes within one data block. However, complicated multi-Gaussian distribution approximation is needed in MMIB-ESM when high modulation schemes such as 16QAM and 64QAM are considered. This paper proposes a new generalized bit-wise E-ESM (BE-ESM), which is shown to have similar performance as MMIB-ESM but with a very simple structure. Furthermore, it is also shown that BE-ESM and MMIB-ESM can be equivalent to each other in certain extents. ©2009 IEEE.link_to_subscribed_fulltex