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3 articles for “Downlink achievable rate”
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Interference Effect Analysis of Pilot Contaminated Massive MIMO Downlink with Different Pre-coders and Channel Estimation
Abstract: A new idea in cellular MU-MIMO is the use of large numbers of BS antennas to serve several single-antenna terminals simultaneously. In multi-cell environments, adjacent cells using the same spectrum cause a pilot contamination problem and degrade signal quality. This pilot overhead can be reduced by reusing pilot sequences in nearby cells; however, this potentially introduces interference in the channel estimation phase, the so-called "pilot contamination" effect. The achievable rate …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 4, Issue 2, 2017 · pp. 1–9 Read article
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LTE & 5G NR Carrier Aggregation Network Optimization through Advanced Measurement Configuration
Abstract: The ability to merge numerous frequency carriers—component carriers—to increase transmission bandwidth and throughput speeds over what can be achieved with a single carrier is known as carrier aggregation, and it is a crucial technology in 4G LTE and 5G networks. Cellular devices may attain gigabit data speeds by combining carriers from several frequency bands, such as 600 MHz to mm Wave frequencies, to increase downlink and uplink capacity. This study …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 10, Issue 2, 2023 · pp. 35–45 Read article
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Performance Analysis of QPSK & QAM Modulation Schemes for Long Term Evolution 4G Communication Standard
Abstract: Long Term Evolution (LTE) is the fourth-generation (4G) communication standard specified by third Generation Partnership Project (3GPP). The LTE standard deploys higher modulation schemes such as QPSK & QAM. These techniques along-with OFDM are widely utilized in LTE systems. The objective of this paper is to analyse and compare QPSK, 16-QAM, 64-QAM modulation techniques for different values of Signal to Noise Ratio (SNR). The simulation of these techniques is carried …
Published in Recent Trends in Parallel Computing · Vol. 6, Issue 2, 2019 · pp. 27–37 Read article