Cell Search Time Performance Using Multipath Signals in LTE Downlink

Tsuchida, Y.; Nagata, Satoshi; Sawahashi, Mamoru

doi:10.1109/vetecs.2011.5956774

Cited by 2 publications

(2 citation statements)

References 6 publications

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“…where β n denotes the ratio of ĉ1 and ĉ0 observed at the n-th DRX occasion. Substituting (20), (19) is further simplified as follows,…”

Section: Second Path Extensionmentioning

confidence: 99%

“…Several conventional research works handle the issue of the detection window configuration. A PSS detection scheme utilizes a windowing concept to consider power delay properties in a multi-path fading environment [19]. This scheme aims to enhance its detection accuracy by taking the average of correlation results within a window, whereas it does not consider reducing computational complexity.…”

Section: Introductionmentioning

confidence: 99%

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Design and Implementation of an Efficient Wake-Up Synchronization Scheme Based on History in a 5G Software Modem

Jeong

Kim

2023

IEEE Access

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5G adopts Discontinuous Reception (DRX) technology, which enables the User Equipment (UE) to repeat sleep and wake-up cycles for power-saving. To minimize power consumption, the UE needs to re-synchronize to a downlink signal transmitted from a serving gNodeB (gNB) for each DRX occasion.To have a synchronization technique suitable to DRX occasions, we design and implement a history-based synchronization scheme that can effectively manage the window of synchronization signal detection. The proposed scheme primarily considers the statistics of previously detected timing offsets when configuring the window of synchronization. The history information is formatted appropriately for calculating the drift of the timing offset on each DRX occasion. The proposed scheme also monitors multi-path environments and extends the detection window to the timing offset of the second path based on the probabilistic model. To demonstrate its performance, the proposed scheme is implemented on a software modem so that it can be processed in real-time. The experimental results demonstrate that the proposed scheme can reduce computational complexity and achieve more precise synchronization in a low Signal to Noise Ratio (SNR) regime.

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“…where β n denotes the ratio of ĉ1 and ĉ0 observed at the n-th DRX occasion. Substituting (20), (19) is further simplified as follows,…”

Section: Second Path Extensionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%