Power Allocation Over Fading Cognitive MIMO Channels: An Ergodic Capacity Perspective


This paper studies the power allocation problem for a cognitive radio (CR) multiple-input-multiple-output (MIMO) system under spectrum sharing with an existing primary radio network. In particular, the ergodic capacity maximization problem is studied in the Rayleigh fading cognitive MIMO channel under both the total transmit power constraint and a set of interference power constraints where each is applied at one of the primary receivers (PRs). This paper considers that the channel from primary transmitter (PT) to secondary receiver (SR), and the channel from secondary transmitter (ST) to SR are both in short-term fading due to the mobility of SR, whereas the channels from ST to PRs are in long-term fading. By using the Lagrangian dual method, the optimal transmit precoding matrix is derived, and some nearly optimal power allocation algorithms are proposed to maximize the bounds of secondary user ergodic capacity. Performance analysis and simulation results show that the proposed schemes can approach the comparative capacity of the optimal power allocation algorithm, which has perfect instant channel state information (CSI), particularly when the antenna number of the ST exceeds the total antenna number of PRs.

Did you like this research project?

To get this research project Guidelines, Training and Code... Click Here

PROJECT TITLE :Modeling and management of photovoltaic and fuel cell based alternative power systemsABSTRACT:Photovoltaic (PV) systems and fuel cells (FCs) represent interesting solutions as being various power sources with
PROJECT TITLE :Most power purpose tracking for photovoltaic solar pump basedon ANFIS tuning systemABSTRACT:Solar photovoltaic (PV) systems are a clean and naturally replenished energy source. PV panels have a distinctive point
PROJECT TITLE :A novel maximum power point tracking technique based on fuzzy logic for photovoltaic systemsABSTRACT:Most power purpose tracking (MPPT) techniques are thought of a crucial part in photovoltaic system design to
PROJECT TITLE :Back stepping based non-linear management for most power purpose tracking inphotovoltaic systemABSTRACT:The increasing energy demands, depleting fossil fuels and increasing world warming due to carbon emission has
PROJECT TITLE :GI primarily based Management Scheme for Single Stage Grid Interfaced SECS for Power Quality ImprovementABSTRACT:This paper presents an improved generalized integrator (GI)-based control with a frequency locked

Ready to Complete Your Academic MTech Project Work In Affordable Price ?

Project Enquiry