Detection and Channel Estimation in 8x8 MIMO-OFDM

Suikkanen, Essi; Ketonen, Johanna; Juntti, Markku

doi:10.4108/icst.crowncom.2014.255390

Cited by 3 publications

(2 citation statements)

References 10 publications

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“…The simulation results presented in [9][10][11][12] show that in an uncorrelated channel, the LMMSE detector is able to outperform the K-best LSD, but as the correlation increases, the opportunities to use the LMMSE detector become scarce. In the 8×8 MIMO system, the LMMSE detector is unable to separate all the spatial streams, and, therefore, it is performing poorly compared to the K-best LSD.…”

Section: Performance Comparisonmentioning

confidence: 99%

“…The SSFE detector was unable to outperform the K-best LSD and was occasionally outperformed by the LMMSE detector. The performances of the LMMSE and K-best detectors in 4 × 4 and 8 × 8 MIMO-OFDM systems with HARQ were compared in [11]. The performance-energy efficiency comparison between the K-best LSD and LMMSE detector were presented in [12] for the 4 × 4 and 8 × 8 systems with HARQ.…”

Section: Introductionmentioning

confidence: 99%

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Performance and ASIC Designs of the K-best LSD and LMMSE Detectors for LTE Downlink

Suikkanen

Juntti

2019

J Sign Process Syst

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We consider performance comparison and application specific integrated circuit (ASIC) designs of linear minimum mean-square error (LMMSE) and Kbest list sphere detector (LSD) algorithms for 4 × 4 and 8 × 8 multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems. Requirements for higher data rate and lower power consumption set new challenges for implementation. In order to minimize the power consumption, an optimal detector would be able to switch the detection algorithm to suit the channel conditions. The detectors are designed for three different modulation schemes using 28 nm complementary metal oxide semiconductor (CMOS) technology. The communications performance is evaluated in the Third Generation Partnership Project (3GPP) Long-Term Evolution (LTE) system. The impact of transmit precoding is considered. The ASIC designs aim at providing the hardware design aspects to the comparison of detectors. The designs are synthesized and complexity and power consumption results are found. Based on the ASIC synthesis and communications performance results, we show the performance-energy efficiency and performance-complexity comparison. We also present the most suitable scenarios for a low-power This research was financially supported in part by Tekes, the

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Section: Performance Comparisonmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%