The performance and efficiency of envelope elimination and restoration transmitters for future multiple-input multiple-output wireless local area networks

Nesimoglu, T.
Parker, S. C. J.
Morris, K. A.
McGeehan, J. P.
The inefficiency of contemporary power amplifiers ( PAs), when operating in their linear region, is a major obstacle to mobile operation of wireless local area networks ( WLANs) based on IEEE 802.11n. Therefore the use of more efficient envelope elimination and restoration ( EER) transmitter architectures is considered. In addition to high efficiency it is also necessary to satisfy the spectral mask and achieve satisfactory link- level performance. Link- level simulations of a contemporary WLAN PA show that, at the power back- offs necessary to achieve sufficient linearity, the power added efficiency ( PAE) is only similar to 1% for a system with four transmit antennas. In contrast, simulations of a phase feedback EER PA architecture show that it is possible to achieve an average PAE of 70%, while satisfying the spectral mask, with only a small degradation in link- level performance.


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Citation Formats
T. Nesimoglu, S. C. J. Parker, K. A. Morris, and J. P. McGeehan, “The performance and efficiency of envelope elimination and restoration transmitters for future multiple-input multiple-output wireless local area networks,” IET COMMUNICATIONS, pp. 473–483, 2008, Accessed: 00, 2020. [Online]. Available: