RAM based physical-layer identity detector for 3GPP Long Term Evolution

Setiawan, Hendra; Kurosaki, Masayuki; Ochi, Hiroshi

doi:10.1109/tencon.2010.5686058

Cited by 7 publications

(7 citation statements)

References 3 publications

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“…And computational complexity of the PSS detection algorithm occupies the most of the ones of whole cell search. Recently, the PSS detection for T‐LTE systems has been widely studied . Generally speaking, the PSS detection is processed in time domain by cross correlation operation based on local time‐domain PSS sequences .…”

Section: Introductionmentioning

confidence: 99%

“…Generally speaking, the PSS detection is processed in time domain by cross correlation operation based on local time‐domain PSS sequences . To resist large frequency offset, a partial correlation scheme at cost of increasing computational complexity was proposed in . Several methods for reducing computational complexity of the cross‐correlation operation using the properties of PSS sequences such as central symmetry were proposed in .…”

Section: Introductionmentioning

confidence: 99%

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Optimization and efficient detection of primary synchronization signal for multi-beam satellite-LTE systems

Wang

Deng

Gao

et al. 2015

Int. J. Satell. Commun. Network.

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SUMMARYA new design of primary synchronization signal (PSS) sequences and an efficient detection algorithm for multibeam satellite long-term evolution (LTE) systems are investigated in this paper. First, a transmit-timing adjustment method is proposed to reduce the large time difference of arrival of received signals from different satellites. Then, using the particular subcarrier mapping scheme of LTE, original Zadoff-Chu sequences are generalized to obtain more candidate sequences with good correlation properties. Later on, choosing an optimal subset from these candidate sequences, new PSS sequences for seamless global coverage multi-beam satellite-LTE systems are obtained. Subsequently, an efficient synchronization and low complexity PSS detection algorithm using interference cancellation method is presented. Finally, simulation results verify the effectiveness of the proposed scheme.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimization and efficient detection of primary synchronization signal for multi-beam satellite-LTE systems

Wang

Deng

Gao

et al. 2015

Int. J. Satell. Commun. Network.

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“…Cell search algorithms have been proposed in many papers [2][3][4][5]. Most of them focus mainly on the complexity reduction.…”

Section: Introductionmentioning

confidence: 99%

“…Since interference from the pre-known cells is removed, detection performance for the next cell is improved. Finite impulse response (FIR) filter is introduced to reduce noise by extracting SCH sequence mapped to the central 1.25MHz bandwidth as shown in [4] Time domain correlation is used for P-SCH detection and the frequency domain correlation is used for S-SCH detection. And the coherent detection is adopted for S-SCH detection as it has much performance enhancement over non-coherent one as shown in [5].…”

Section: Introductionmentioning

confidence: 99%

An Improved SCH Detection in Cell Search of 3GPP LTE System

Ryu

Kim

2015

Advanced Science and Technology Letters

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Long Term Evolution (LTE) system of the third generation partnership project (3GPP) has primary and secondary synchronization channels to help the terminal search cell. Primary synchronization channel (P-SCH) is used to acquire slot timing and cell group. Secondary synchronization channel (S-SCH) is used to obtain frame boundary and cell identity (Cell ID). Cell search plays important role to find a cell and handover to neighbor cell smoothly. This paper proposes interference cancelling (IC) technique in cell search. Canceling the pre-detected synchronous channel from the received signal results in the improved search performance for the next target cell. System with ICOverall initial cell searcher system using proposed IC is shown in Figure 1. For the first cell detection, there is no regenerated signal but for the second cell detection, the

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“…The detection of PSS sequence can be carried out either in time domain or in frequency domain. In the case that a time-domain PSS-match scheme is exploited [8,[10][11][12], the subcarriers containing PSS have to be extracted by a high-order filter from the received composite signal right before the correlation stage. This design methodology will certainly increase system complexity and lead to performance degradation because of the existing carrier frequency offset.…”

Section: Introductionmentioning

confidence: 99%