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Channel Estimation (CE) with co-channel interference in an uplink Space Division Multiple Access (SDMA) Single Carrier (SC) with Frequency Domain Equalization (SC-FDE) system has been evaluated. There are a variety of linear and nonlinear techniques available for multi-user separation and detection in the presence of interference. The simplest and fastest-converging methods rely on estimation of each co-channel interferer's Channel Frequency Response (CFR) to each receiving antenna element, exploiting received pilot signals from each interferer, multiplexed in time or frequency with data.
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