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User Pairing and Resource Allocation for DFTS-OFDMA Uplink Systems Using Virtual MIMO
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 Title & Authors
User Pairing and Resource Allocation for DFTS-OFDMA Uplink Systems Using Virtual MIMO
Shin, Dong Ryul; Wang, Jinsoo; Kim, Yun Hee;
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 Abstract
We consider user pairing and resource allocation for the uplink of cellular systems employing virtual multiple input multiple output (MIMO). As a multiple access scheme, discrete Fourier transform spread orthogonal frequency division multiple access (DFTS-OFDMA) is adopted for more flexible resource allocation than single carrier (SC)-OFDMA adopted in the Long Term Evolution (LTE) system. We formulate the optimization problems of user pairing and resource allocation to maximize the throughput of the DFTS-OFDMA system under different constraints. The DFTS-OFDMA allowing non-contiguous subcarrier allocation and redundant user assignment provides a better throughput than the SC-FDMA at lower complexity in finding the optimal solution but at the cost of the increased control information indicating the allocated resources.
 Keywords
Virtual MIMO;DFTS-OFDMA;User pairing;Resource allocation;Throughput;
 Language
Korean
 Cited by
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