In the future vehicular networks with an increased number of transceiver antennas and higher vehicle speeds, more frequent beam switching is required to ensure quality communication, which poses challenges tracking speed resource efficiency. Integrated sensing communication (ISAC) provide a new solution cope this problem since radar echo can help predict vehicle’s location direction. Therefore,...

Queuing delay is of essential importance in the Internet-of-Things scenarios where buffer sizes devices are limited. The existing cross-layer research contributions aiming at minimizing queuing usually rely on either transmit power control or dynamic spectrum allocation. Bearing mind that transmission throughput dependent distance between transmitter and receiver, this context we exploit agilit...

Adaptive antenna arrays can increase the capacity of wireless mobile communication systems by reducing cochannel interference. This thesis reviews current base station technology and examines the possibility of implementing an adaptive phased antenna array at a cellular CDMA base station. It is seen that a computationally simple beamforming system and direction-of-arrival estimator can signific...

Scheduling all user equipment jointly and using a linear precoder is optimal for massive MIMO with a very large number of base station antennas. Scheduling becomes more important as the number of base station antennas is reduced. We determine the regime where scheduling provides gains for massive MIMO scenarios with linear precoding methods. We apply semi-orthogonal user selection to massive MI...

We propose a decentralized downlink scheduling protocol for wireless cellular networks that allows each base station to control its transmission power. On the beginning of each scheduling period, neighbor base stations exchange their local system states, i.e., channel, traffic and position statistics of their local mobile users. But on each slot of the current scheduling period, the base statio...

In CDMA cellular systems, multicode transmission is an effective way of accommodating multimedia traffic having various transmission rates. We proposed a common searcher configuration at a base station to successfully handle multicode signals. The number of searchers needed in a base station can be reduced because a multicode signal needs only one searcher. We evaluated the call blocking probab...