Abstract
In this paper, we present a set of sequence pairs which produce zero correlation windows not only in the middle part of the sum of aperiodic correlation functions, but also in the two terminal parts. We name it Ear Windows. In approximately synchronous CDMA communication system, this set of sequences is able to completely remove the inter-symbol interference (ISI) and multi-user interference (MUI) caused by the multipath effect if the maximum delay is shorter than the length of the Ear windows. In addition, it is also feasible in M-ary modulation. The intercede interference will be mitigated drastically.
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