Loading...
Search for:
coordinated-multipoint--comp-networks
0.006 seconds
Coordinated Multi-Points (CoMP) Transmission in Multiuser Relay Networks
, M.Sc. Thesis Sharif University of Technology ; Hossein Khalaj, Babak (Supervisor)
Abstract
Joint multi-input multi-output (MIMO) filter-and-forward relaying and post-processing at base stations (BSs) for uplink coordinated multi-point (CoMP) reception has been investigated in the case of users-to-relay and relay-to-BSs frequency-selective fading channels. Signal transmission from users to BSs is performed in two phases. In the first phase, all users transmit their data to MIMO relay at the same time slot. In order to combat the interference due to frequency-selectivity of channels, MIMO relay passes its received signals through a finite impulse response (FIR) filter. Then, in the second phase, relay transmits the processed signals to the BSs. In order to further reducemean square...
Distributed Transmission in Relay Coordinated Multi-point (COMP) Networks
, M.Sc. Thesis Sharif University of Technology ; Hossein Khalaj, Babak (Supervisor) ; Behroozi, Hamid (Supervisor)
Abstract
Time offset (TO) at an orthogonal frequency division multiplexing (OFDM) system destroys orthogonality of subcarriers and causes interchannel interference (ICI) and inter symbol interference (ISI). This problem is more challenging in multi-user multi-input multi-output (MU-MIMO) OFDM systems such as coordinated multi-point (CoMP) uplink transmission where joint processing is performed at base stations (BSs) and different delays form users to BSs cannot be compensated by timing strategies. In this thesis, we use delay-amplify and forward relays and post processing at receivers to decrease signal to interference plus noise ratio (SINR) degradation due to large TOs at insufficient cyclic prefix...
Resource Allocation in Coordinated Multi-Cell Networks Based on Game Theory
, M.Sc. Thesis Sharif University of Technology ; Behroozi, Hamid (Supervisor) ; Hosseini Khalaj, Babak (Co-Advisor)
Abstract
Satisfying the growing demands for mobile services and radio communications makes the future wireless networks to fully reuse resources such as available frequency bands, which in turn leads to profound increase in inter-cell interferences (ICI). Forcing higher interference may degrade the performance of systems in serving the users especially in cell-edges. Necessity of mitigating ICI along with higher data rate requirements push the communication engineers to advanced technologies utilization. As a result of higher complexity based on promising technologies, resource management would play even a major role in next generation mobile networks. Analyzing these technical challenges that have...