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Comment on `An Efficient Random Access Scheme for OFDMA Systems with Implicit Message Transmission'

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3 Author(s)
Chia-Hung Wei ; Department of Electronic and Computer Engineering, National Taiwan University of Science and Technology, Taiwan ; Ping-Chen Lin ; Ray-Guang Cheng

In [1], the throughput and access delay performance of the RACH in an orthogonal frequency division multiple access (OFDMA) system is analyzed. However, the analysis of access delay is incorrect. This note corrects the original equations and results show that the new equations correct the non-negligible error of the average access delay under the uniform backoff policy.

Published in:

IEEE Transactions on Wireless Communications  (Volume:12 ,  Issue: 1 )