The next-generation wireless networks are evolving into very complex systems because of the diversified service requirements, heterogeneity in applications, devices, and networks. network operators need to make best use available resources, for example, power, spectrum, as well infrastructures. Traditional networking approaches, i.e., reactive, centrally-managed, one-size-fits-all conventional data analysis tools that have limited capability (space time) not competent anymore cannot satisfy...

The small cell network (SCN) is one of the emerging technologies for next generation wireless systems. It can provide lots advantages, such as enlargement coverage, boost peak data rate, improvement link quality, flexibility deployment, etc. In SCN, a specific scenario, where density base stations (SBS) much higher than that user equipments (UE), becomes popular topic recently. Because high SBSs, it offer diversity SBS selection and, hence, improve system performance. Besides, under this...

For beyond 5G wireless communication systems, inband full-duplex (IBFD) is one of the important candidate technologies for realizing high capacity and low latency transmissions. However, in an IBFD system, base station (BS) can perform uplink (UL) downlink (DL) processes simultaneously, hence there exists severe self-interference (SI) produced by simultaneous UL DL communications system. Therefore, to realize it necessary deal with SI problem. To cancel SI, adaptive filter possible...

To actively develop and promote Internet of Things related techniques, we propose a dynamic non-centric networking approach using virtual gateway platforms, evaluate it based on low-power wide-area networks that adopt the traditional star mesh topologies. In our approach, for each local device, first present device management method in which two working modes are set to indicate whether works as (VGW) or provides relay services. Then an internal parameter is defined manage mode by...

In order to verify the channel sum-rate improvement by multi-user multiple-input multiple-output (MU-MIMO) transmission in distributed antenna systems (DASs), we investigate and compare characteristics of sum-rates both centralized (CASs) DASs under effects path loss, spatially correlated shadowing, multi-path fading, inter-cell interference. this paper, introduce two different types functions model auto-correlation cross-correlation, a typical exponential decay function fading correlation....

In order to demonstrate the channel capacity improvement by multiple-input multiple-output (MIMO) transmission techniques in distributed antenna systems (DAS), capacities of both centralized (CAS) and DAS are compared assuming spatially correlated shadowing. Many studies deal with these independent this paper, we compare characteristics MIMO CAS under effect distance-dependent path loss, shadowing Rayleigh fading, inter-cell interference. Computer simulation results indicate that DAS-MIMO...

Distributed antenna systems (DASs) combined with multi-user multiple-input multiple-output (MU-MIMO) transmission techniques have recently attracted significant attention. To establish MU-MIMO DASs that wide service areas, the use of a dynamic clustering scheme (CS) is necessary to reduce computation in precoding. In present study, we propose simple method for single cell large-scale DAS and investigate its performance. We also compare characteristics proposal those other schemes such as...

Large-scale distributed antenna systems (LS-DASs) are gaining increasing interest and emerging as highly promising candidates for future wireless communications. To improve the user's quality of service (QoS) in these systems, this study proposes a user cooperation aided clustering approach based on device-centric architectures; it enables multi-user multiple-input multiple-output transmissions with non-reciprocal setups. We actively use device-to-device communication techniques to achieve...

In recent years, user cooperative traffic forwarding is a popular study topic and broadly seen as one of the important promising technologies to improve energy efficiency (EE) battery-driven mobile terminal (MT). However, devices always suffer from problem limited working time due battery life. this paper, we propose simply machine learnable bandwidth allocation strategy for cooperation-aided wireless communication systems evaluate power consumption via both theoretical experimental...

The performance of multiuser multiple-input single-output (MU-MISO) systems is not only affected by small-scale multipath fading but also large-scale (i.e., shadowing) and path loss. In this paper, we concentrate on the sum rate distribution MU-MISO employing linear zero-forcing beamforming, accounting for both shadowing effects, as well spatial correlation at transmit receiver sides. particular, consider classical spatially correlated lognormal model propose closed-form bounds achievable...

The small cell network is one of the emerging technologies for next generation wireless systems. It can enlarge coverage, boost peak data rate, improve link quality, and offer flexible deployment. In this paper, we investigate a specific scenario, where density base stations (BS) much higher than that user equipments (UE). Under condition, each UE be served by multiple BSs, which also motivates use coordinated multi-point (CoMP) transmissions in dense networks. Therefore, with highly...

Our main aim is to develop and demonstrate energy saving technologies for mobile terminals (MTs) equipped with multiple wireless interfaces. We propose a new framework of device-to-device (D2D) cooperative virtual small-cell network in which MT acts base station take advantage the good channel quality long range link low consuming interface short save MTs. In proposed D2D framework, how select proxy connects wide area (WAN) provides local (LAN) connection cooperated MTs an important issue,...

Recently, low power wide area (LPWA) wireless technologies is one of the most popular topics in communication because their important function realizing Internet Things (IoT) applications. Among all LPWA technologies, LoRa and with consumption, long life-time, robustness to noise, deployment cost. For system, adopting multi-gateway structure can obtain diversity gateway selection hence improve performance. In this study, we investigate characteristics system propose a novel method...

The performance of multi-user multiple-input multiple-output (MU-MIMO) systems is not only affected by multi-path fading, but also shadowing and path-loss. In this paper, we concentrate on the sum rate distribution MU-MIMO employing linear zero-forcing receivers, accounting for both fading effects, as well spatial correlation at transmit receiver sides. particular, consider classical spatially correlated lognormal model, propose closed-form bounds achievable rates in systems. With help these...

For next generation wireless communication systems, high throughput, low latency, and large user accommodation are popular important required characteristics. To achieve these requirements for an in-band full-duplex (IBFD) system is one of the possible candidate technologies. However, to realize IBFD there essential problem that exists a self-interference (SI) due simultaneous signal transmission reception in systems. Therefore, implement system, it necessary series effective SI cancellation...

Large-scale distributed antenna systems (LS-DASs) are gaining increasing momentum and emerging as highly promising candidates for future wireless communications. To improve the user's quality of service (QoS) in that systems, present study, we propose a user cooperation aided clustering approach based on device-centric architectures enable multi-user multiple-input multiple-output transmissions with non-reciprocal setups. We actively use device-to-device communication techniques to achieve...

The next-generation wireless networks are evolving into very complex systems because of the diversified service requirements, heterogeneity in applications, devices, and networks. mobile network operators (MNOs) need to make best use available resources, for example, power, spectrum, as well infrastructures. Traditional networking approaches, i.e., reactive, centrally-managed, one-size-fits-all approaches conventional data analysis tools that have limited capability (space time) not...

Decentralized synchronization among peer devices (PDs) for distributed device-to-device (D2D) wireless networks has been explored by many researches. A general way of performing decentralized is based on pulse-coupled methods. In which, all PDs are equal and each PD sends receives packets as well adjusts own clock accordingly to achieve mutual synchronization. newly published standard IEEE STD 802.15.8 (STD-15.8) provides a systematic process D2D. However, we find that the STD-15.8 may...

In the next generation wireless communication systems, high-speed data rate, reliable link quality, and ubiquitous access are necessary requirement. To meet system requirements, ultra-dense small cell network (SCN) is proposed as one of possible candidate solutions. achieve high rate coordinated multiple point (CoMP) transmission usually used in SCN to satisfy performance target. However, realize CoMP transmissions ultradense SCN, feedback load heavy because large amount cells users. this...

To further improve spectral efficiency for current wireless communication systems, we propose a new lazy learning-based cancellation approach to suppress self-interference (SI) sent from base station and enable in-band full-duplex (IBFD) transmissions in cellular networks. Differ the existing IBFD systems based on traditional approaches, our proposal consists of two phases: an offline phase database generation online data transmission. In phase, output before 0/1 decision is previously...

We propose a new lazy learning-based cancellation approach to improve spectral efficiency for current wireless communication systems, suppress self-interference (SI) sent from base stations, and enable in-band full-duplex (IBFD) transmissions in cellular networks. Our proposed consists of two phases based on traditional IBFD systems: an offline phase database generation online data transmission. In the phase, output before 0/1 decision is premeasured without desired signal input recorded...