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Uplink Capacity of A Cellular System Using Multi-user Single-carrier MIMO Multiplexing Combined with Frequency-domain Equalization and Transmit Power Control

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Abstract

Multi-user single-carrier multiple-input multiple-output (MU SC-MIMO) multiplexing can increase the uplink capacity of a cellular system without expanding the signal bandwidth. It is practically important to make clear an extent to which the MU SC-MIMO multiplexing combined with frequency-domain equalization (FDE) and transmit power control (TPC) can increase the uplink capacity in the presence of the co-channel interference (CCI). Since the theoretical analysis is quite difficult, we resort to the computer simulation to investigate the uplink capacity. In this paper, frequency-domain zero-forcing detection (ZFD) and frequency-domain minimum mean square error detection (MMSED) are considered for MU signal detection. It is shown that ZFD and MMSED provide almost the same uplink capacity and that an advantage of fast TPC over slow TPC diminishes. As a result, MU SC-MIMO using computationally efficient ZFD can be used together with slow TPC instead of using MMSED. With 8 receive antennas and slow TPC, MU SC-MIMO multiplexing using ZFD can achieve about 1.5 times higher uplink capacity than SU SC-SIMO diversity.

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Authors and Affiliations

  1. Department of Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University, 6-6-05 Aza-Aoba, Aramaki, Aoba-ku, Sendai-shi, 980-8579, Japan

    Takahiro Chiba, Kazuaki Takeda, Kazuki Takeda & Fumiyuki Adachi

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  1. Takahiro Chiba
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  2. Kazuaki Takeda
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  3. Kazuki Takeda
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  4. Fumiyuki Adachi
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Correspondence to Fumiyuki Adachi.

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Chiba, T., Takeda, K., Takeda, K. et al. Uplink Capacity of A Cellular System Using Multi-user Single-carrier MIMO Multiplexing Combined with Frequency-domain Equalization and Transmit Power Control. Wireless Pers Commun 58, 455–468 (2011). https://doi.org/10.1007/s11277-010-0130-5

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  • DOI: https://doi.org/10.1007/s11277-010-0130-5

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