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Pattern Division Multiple Access (PDMA) is a novel non-orthogonal multiple access scheme proposed to meet the demand of massive connection in the future 5G communications. PDMA is based on the joint design of transmitter and receiver. The multiuser signals are superposed on the multiple signal domains based on different characteristic patterns at the transmitter side, and the successive interference...
Non-orthogonal multiple access (NOMA) is a promising technique for the fifth generation mobile communication system due to its high spectral efficiency (SE). Previous works focus on user scheduling or/and power allocation to achieve the maximization of sum rate. However, the energy efficiency (EE) has not been well studied for NOMA systems. In this paper, we aim to optimize user scheduling and power...
Pattern division multiple access (PDMA) is one of the important candidate multiple access technologies for future 5G wireless communication systems. It can improve the spectral efficiency and support the massive connection based on the reasonable unequal diversity between users. This paper investigates the outage performance and achievable sum data rate of uplink PDMA system. The developed analytical...
Ultra dense network (UDN) is identified as one of the key enablers for 5G since it can provide ultra high spectral reuse factor exploiting proximal transmissions. By densifying the network infrastructure equipments, it's highly possible that each user will have one or more dedicated serving base station antennas, introducing the user-centric virtual cell paradigm. However, due to irregular deployment...
Abstract-- As a promising radio access technology for future 5G network, novel multiple access (NMA) is aimed to improve spectrum efficiency and access capability via design of successive interference cancellation (SIC) amenable pattern in single domain (e.g. power domain, code domain, and space domain) or joint multiple domains. In this paper, a pattern in joint space and power domain is designed...
This paper presents a pattern division multiple access (PDMA) concept for cellular future radio access (FRA) towards the 2020s information society. Different from the current LTE radio access scheme (until Release 11), PDMA is a novel non-orthogonal multiple access technology based on the total optimization of multiple user communication system. It considers joint design from both transmitter and...
With the rising of smart devices and data-intensive service, more and more people have been dedicated to the study of a novel network architecture and communication solution. As 5G revolutionizes how humans acquire, manage and engage with information, this trend will accelerate. To meet this evolution, a novel admission control strategy in LTE-A and WLAN integrated network is proposed in this paper...
China had footnoted the frequency band will be authorized for IMT service in the 2007 World Radio Communication Conference(WRC[1]) According to China and international service applications, There will be coexistence between digital terrestrial multimedia broadcasting (DTMB) service and IMT service including TD-LTE service system. This paper targets deriving frequency isolation(FI)and appropriate coexistence...
The aim of SON (Self-Organizing Network) is to realize the autonomic function of the wireless network by self-configuration, self-optimization and self-healing, which reduces the human intervention and improves the user experience. Self-configuration is a process where newly deployed eNodeB are configured by automatic installation procedures to get the necessary basic configuration for system operation...
Energy detection has a low complexity of receiver structure and requires no information about primary signal. However, a single user detection has been proved vulnerable to the noise uncertainty, which causes the existence of a SNR wall belowwhich the detector cannot robustly a chieve the given detection requirement. Compared to single user detection, cooperative energy spectrum sensing algorithms...
The cloud base-station realizes base station baseband unit (BBU) centralized on a universal cloud computing platform and connected the remote radio units (RRUs) with fiber. Automated healing of the cloud base-station applies to detect and compensate the outage RRU automatically by the adjacent RRUs cooperation. It aims at providing temporary alleviation of coverage, capacity and service quality caused...
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