On frame synchronization for multiple access channels
Author(s)Shen, Dawei; Zhang, Wenyi; Reed, David P.; Lippman, Andrew B.
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The problem of frame synchronization is formulated and investigated for multiple access channels (MAC). Several decision rules for locating the starting positions in continuously transmitted frames are proposed and compared, for both user- synchronous and user-asynchronous cases. It is shown that the common decision rule based on the correlation statistic is suboptimal, and that correction terms need be added in order to achieve an improved detection performance. For the user-asynchronous case, the optimal joint decision rule is derived in analytical form for two-user MAC and is highly complex, and is shown to suffer from a high computational complexity. To reduce the complexity, suboptimal separate decision algorithms with and without Gaussian approximation are derived, and it is illustrated using Monte Carlo simulation that those low-complexity algorithms only incur a slight degradation in optimality.
DepartmentProgram in Media Arts and Sciences (Massachusetts Institute of Technology)
IEEE International Conference on Communications Workshops, 2009. ICC Workshops 2009
Institute of Electrical and Electronics Engineers
Shen, D. et al. “On Frame Synchronization for Multiple Access Channels.” Communications Workshops, 2009. ICC Workshops 2009. IEEE International Conference on. 2009. 1-5. © 2009 IEEE.
Final published version
INSPEC Accession Number: 10827566