Rate Adaptation in Predictor Antenna Systems

Rate Adaptation for Cooperative Systems

Throughput is an important performance measure for data communications over wireless links. In this work, we consider joint adaptation of coding rates, modulation modes and level of cooperation for cooperative relaying to maximize the data throughput. We consider five different schemes with joint adaptation based on channel statistics: Direct transmission, conventional multihop, stationary and ...

On beamforming with finite rate feedback in multiple-antenna systems

In this paper, we study a multiple antenna system where the transmitter is equipped with quantized information about instantaneous channel realizations. Assuming that the transmitter uses the quantized information for beamforming, we derive a universal lower bound on the outage probability for any finite set of beamformers. The universal lower bound provides a concise characterization of the ga...

Adaptive Rate Control for Multi-Antenna Multicast in OFDM Systems

We propose two rate control schemes for multi-antenna multicast in OFDM systems, which aim to maximize the minimum average rate over all users in a multicast group. In our system, we do not require all multicast users to successfully recover the signals received on each subcarrier. In contrast, we allow certain loss for multicast users, such that the multicast transmission rate can be increased...

Comparative Adaptation of some pox viruses in two cell systems

Rate Adaptation, Power Control, and Diversity Combining in Wireless Systems

The present dissertation consists of a collection of six papers preceded by an introduction. The papers investigate the design and performance analysis of communication systems operating over wireless fading channels. Wireless communication systems carry great expectations for future services. They are expected to give users both reliable high data rate transmission and the freedom of mobility....