M M Aftab Hossain

KTH Royal Institute of Technology | KTH · Department of Communication Systems (CoS)

In this paper, we study cross-layer optimization of low-power wireless links for reliability-aware applications while considering both the constraints and the non-ideal characteristics of the hardware in Internet-of-things (IoT) devices. Specifically, we define an energy consumption (EC) model that captures the energy cost—of transceiver circuitry,...

In this paper, we study cross-layer optimization of low-power wireless links for reliability-aware applications while considering both the constraints and the non-ideal characteristics of the hardware in IoT devices. Specifically, we define an energy consumption (EC) model that captures the energy cost---of transceiver circuitry, power amplifier, p...

Massive MIMO (MM) is one of the leading technologies that can cater for very high capacity demand. However, energy consumption of MM systems need to be load adaptive in order to cope with the significant temporal load variations (TLV) over a day. In this paper, we propose a game-theoretic model for studying load adaptive multi-cell massive MIMO sys...

The vision of connecting billions of battery operated devices to be used for diverse emerging applications calls for a wireless communication system that can support stringent reliability and latency requirements. Both reliability and energy efficiency are critical for many of these applications that involve communication with short packets which u...

Massive MIMO is a promising technique to meet the exponential growth of mobile traffic demand. However, contrary to the current systems, energy consumption of next generation networks is required to be load adaptive as the network load varies significantly throughout the day. In this paper, we propose a load adaptive multi-cell massive MIMO system...

Massive MIMO is a promising technique to meet the exponential growth of global mobile data traffic demand. However, contrary to the current systems, energy consumption of next generation networks is required to be load adaptive as the network load varies significantly throughout the day. In this paper, we propose a load adaptive massive MIMO system...

Ensuring seamless coverage accounts for the lion's share of the energy consumed in a mobile network. Overlapping coverage of three to five mobile network operators (MNOs) results in enormous amount of energy waste which is avoidable. The traffic demands of the mobile networks vary significantly throughout the day. As the offered load for all networ...

This paper takes into consideration the non-ideal efficiency characteristics of realistic power amplifiers (PAs) along with the daily traffic profile in order to investigate the impact of PA dimensioning on the energy efficiency (EE) of load adaptive massive MIMO system. A multicellular system has been considered where each base station (BS) is equ...

The energy-delay tradeoff is one of the fundamental tradeoffs when looking for energy efficient wireless access networks. The potential to save energy at the base station (BS) by introducing delay in the downlink is constrained by both the non-ideal efficiency characteristics of power amplifier (PA) and the energy cost suffered by the mobile termin...

In this paper, we study the energy-delay trade-off in the downlink of a proportional-fair cellular system with inter-cell interference and fading, while incorporating the efficiency characteristics of realistic amplifiers(PA). We study the potential for energy saving by lowering the transmission power level at different user locations in a cell at...

Exponential growth of capacity demand is making energy efficient cellular network densification an important issue. As a network is dimensioned based on the busy hour capacity demand, a large portion of network capacity remains idle for a big part of the day. Unfortunately, the power consumption of a base station does not scale down proportionally...

Energy consumption of next generation radio access network is posing a deep impact on CO2 emission and network operating cost. In a macro site, radio equipment dominates the power consumption. Specifically, the power amplifiers consume 70% of the total input power. In case of WCDMA and OFDMA, the Traditional Power Amplifier (TPA) suffers from low e...

Energy consumption of mobile access networks has recently received increased attention. Although cellular networks account for a rather small share of energy that is used by the ICT (Information and Communication Technology) sector, lowering their energy consumption appears important from an economical perspective. This paper recalls different mean...

Energy consumption of mobile access networks has recently received increased attention. The cellular networks do not have considerable share in the overall energy consumption of the ICT (Information and Communication Technology) sector. However, reduction in energy consumption of cellular networks has great importance from economical and environmen...

Widespread proliferation of competitive technologies in licence free Industrial, Scientific and Medical (ISM) radio band is squeezing the room in frequency, temporal and spatial domain for the reliable operation of low power, low cost, IEEE 802.15.4 devices. In this context, providing some intelligence to IEEE 802.15.4 devices to analyze the enviro...