An Enhanced Signal-Timing-Offset Compensation Algorithm for Coordinated Multipoint-to-Multiuser Systems

Zhao, Liqiang; Liang, Kai; Cao, Guofeng; Qian, Rong; Liu, David

doi:10.1109/lcomm.2014.2318321

Cited by 10 publications

(10 citation statements)

References 5 publications

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“…It can be seen that the normalized RMSE of power estimation of the IPIC algorithm is approximate 1/3 that of the correlation algorithm, and that the RMSE of TO estimation of the IPIC algorithm is also 2 ∼ 9 samples less than that of the correlation algorithm. The results indicate that the proposed IPIC algorithm could significantly improve the performance of power and TO estimation, facilitating the CU to perform initial TP clustering [11] and further CoMP transmission [3]- [5]. Fig.…”

Section: B Simulation Resultsmentioning

confidence: 99%

“…Several researches have been done for the CoMP transmission with the presence of TOs in [3]- [5], in which implicit assumptions are made that distributed TPs could accurately estimate TOs and that the central unit (CU) has exact knowledge about TOs. A TO compensation scheme is proposed in [3] to replace the conventional timing advance technique to lower the requirement for the length of the cyclic prefix (CP), and two CoMP transmission schemes are proposed to cope with TOs in [4], [5].…”

Section: Introductionmentioning

confidence: 99%

“…A TO compensation scheme is proposed in [3] to replace the conventional timing advance technique to lower the requirement for the length of the cyclic prefix (CP), and two CoMP transmission schemes are proposed to cope with TOs in [4], [5]. They show that the CoMP transmission could be carried out without performance degradation once the knowledge about TOs is exactly known to the CU.…”

Section: Introductionmentioning

confidence: 99%

“…While for the CoMP transmission, each UE has to complete several RA procedures with all distributed TPs for the CU to obtain the knowledge about TOs and power. By doing so, the TO compensation [3] and the CoMP transmission schemes [4], [5] could be implemented. It is also worth noting that the initial power estimation can be utilized for the TP clustering scheme for further CoMP transmission [11].…”

Section: Introductionmentioning

confidence: 99%

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A Centralized Preamble Detection-Based Random Access Scheme for LTE CoMP Transmission

Wang

Ren

2016

IEEE Trans. Veh. Technol.

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For the coordinated multipoint (CoMP) transmission in LTE systems, its performance is greatly impacted by the estimation of timing offsets (TOs) between cell-edge user equipments and transmit points, which is supposed to be dealt with by using the random access (RA) procedure. Available RA schemes for the CoMP transmission offer poor RA performance in terms of multiuser detection, TO estimation, power estimation, and access delays. To improve the RA performance and fully exploit the CoMP structure, in this work, we propose a novel centralized parallel RA scheme, which performs in threefold. Firstly, a novel RA sub-channel allocation scheme is proposed to suppress mutual interference between coordinated users and non-coordinated users. Secondly, an iterative parallel interference cancellation based multiuser detection and estimation algorithm is proposed on the basis of the space alternating generalized expectation-maximization algorithm. Finally, the coordinated diversity of the system structure could be exploited to implement centralized multiuser detection. Analyses and simulation results show that the proposed RA scheme is able to provide satisfied RA performance compared to existing ones.Index Terms-long term evolution, coordinated multipoint, centralized parallel random access, frequency division multiplexed sub-channels, iterative parallel interference cancellation, coordinated diversity.

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Section: B Simulation Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Centralized Preamble Detection-Based Random Access Scheme for LTE CoMP Transmission

Wang

Ren

2016

IEEE Trans. Veh. Technol.

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“…Considering synchronization in CoMP based communication systems, Table XVII summarizes the recent research: 1) The timing synchronization alone is studied by [48,367,369], where as identified in the second column of Table XVII, [48] considers single carrier communication and [367,369] consider multi-carrier communication. 2) Carrier synchronization alone is studied by [365,368,370,371,372,374], where as identified in the second column of Table XVII, [365] considers single carrier communication and [368,370,371,372,374] consider multi-carrier communication.…”

Section: F Comp Based Communication Systemsmentioning

confidence: 99%

Timing and carrier synchronization in wireless communication systems: a survey and classification of research in the last 5 years

Nasir

Durrani

Mehrpouyan

et al. 2016

J Wireless Com Network

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Timing and carrier synchronization is a fundamental requirement for any wireless communication system to work properly. Timing synchronization is the process by which a receiver node determines the correct instants of time at which to sample the incoming signal. Carrier synchronization is the process by which a receiver adapts the frequency and phase of its local carrier oscillator with those of the received signal. In this paper, we survey the literature over the last 5 years (2010)(2011)(2012)(2013)(2014) and present a comprehensive literature review and classification of the recent research progress in achieving timing and carrier synchronization in single-input single-output (SISO), multiple-input multiple-output (MIMO), cooperative relaying, and multiuser/multicell interference networks. Considering both single-carrier and multi-carrier communication systems, we survey and categorize the timing and carrier synchronization techniques proposed for the different communication systems focusing on the system model assumptions for synchronization, the synchronization challenges, and the state-of-the-art synchronization solutions and their limitations. Finally, we envision some future research directions.

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A Fair Power Splitting Algorithm for Simultaneous Wireless Information and Energy Transfer in CoMP Downlink Transmission

Liang

Zhao

Yang

et al. 2015

Wireless Pers Commun

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An Enhanced Signal-Timing-Offset Compensation Algorithm for Coordinated Multipoint-to-Multiuser Systems

Cited by 10 publications

References 5 publications

A Centralized Preamble Detection-Based Random Access Scheme for LTE CoMP Transmission

A Centralized Preamble Detection-Based Random Access Scheme for LTE CoMP Transmission

Timing and carrier synchronization in wireless communication systems: a survey and classification of research in the last 5 years

A Fair Power Splitting Algorithm for Simultaneous Wireless Information and Energy Transfer in CoMP Downlink Transmission

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