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Reduced–Complexity Transmission and Reception Strategies in Coordinated Multi-cell Wireless Networks
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- Author / Creator
- Kaviani, Saeed
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Interference is known as a major obstacle for the spectral efficiency increase
promised by multiple-antenna techniques in cellular wireless communications.
Recently, it has been shown that multi-cell coordination can mitigate interference
and improve system performance dramatically. Hence, we concentrate
on the downlink of multi-cell multiple-antenna (at both ends) wireless
networks also known as network multiple-input multiple-output (MIMO) or
coordinated multi-point (CoMP) transmission/reception systems. In multi-cell
coordination, antennas from multiple base stations form a large MIMO system.
Consequently, coordination comes with high signal processing overhead. In
this dissertation we focus on reduced-complexity transmission and reception
strategies in partially coordinated multi-cell systems, where the user data are
partially shared between base stations. We first model partial coordination
using MIMO interference channel with generalized linear constraints. Then,
we investigate linear transmission strategies using this channel model. The
contributions of this dissertation fall into the following categories of techniques:
(i) Block diagonalization (multiple-antenna multi-user zero-forcing) transmit
precoding under individual power constraints. (ii) Minimum mean square
error (MMSE) linear precoding and equalization design; (iii) Worst-case
robust precoding and equalization, where we consider imperfect channel
state information available at the transmitter and receiver. Furthermore, our
simulation setup accounts for realistic cellular parameters in evaluating the
performance in multi-cell networks. -
- Graduation date
- Fall 2012
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- Type of Item
- Thesis
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- Degree
- Doctor of Philosophy
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- License
- This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.