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Advanced interference management techniques for future wireless networks

หน่วยงาน Edinburgh Research Archive, United Kingdom

รายละเอียด

ชื่อเรื่อง : Advanced interference management techniques for future wireless networks
นักวิจัย : Razavi, Seyed Morteza
คำค้น : wireless cellular networks , interference management techniques , standard linear precoders , channel state information
หน่วยงาน : Edinburgh Research Archive, United Kingdom
ผู้ร่วมงาน : Ratnarajah, Tharm , Haas, Harald , European Commission
ปีพิมพ์ : 2557
อ้างอิง : http://hdl.handle.net/1842/8915
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : S.M. Razavi and T. Ratnarajah, “Interference alignment in K-user MIMO interference channels with partially coordinated receivers,” IET Communications, vol. 8, no. 1, pp. 50–57, Jan. 2014. , S. M. Razavi and T. Ratnarajah, “Interference alignment in partially coordinated multipoint receivers,” IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), 2013, pp. 1114–1118. , H. Zhou, S. M. Razavi, T. Ratnarajah, and M. Sellathurai, “Interference alignment with doubly layered signalling for constant SISO interference channels,” IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2013, pp. 4197–4201. , S.M. Razavi, T. Ratnarajah, “Interference alignment in coordinated multipoint systems,” Asilomar Conference on Signals, Systems, and Computers, 2012, pp. 1576– 1580. , S. M. Razavi, T. Ratnarajah, C. Masouros, and M. Sellathurai,“Joint interference and phase alignment in multiuser MIMO interference channels,” Asilomar Conference on Signals, Systems, and Computers, 2012, pp. 1137–1141. , S. M. Razavi and T. Ratnarajah, “Enhanced linear precoding in coordinated multicell broadcast systems,” IEEE International Workshop on Signal Processing Advances for Wireless Communications (SPAWC), 2012, pp. 249-253. , S.M. Razavi and T. Ratnarajah, “Subspace beamforming via block SVD forMIMO systems,” IEEE InternationalWorkshop on Signal Processing Advances forWireless Communications (SPAWC), 2012, 95–99.
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

In this thesis, we design advanced interference management techniques for future wireless networks under the availability of perfect and imperfect channel state information (CSI). We do so by considering a generalized imperfect CSI model where the variance of the channel estimation error depends on the signal-to-noise ratio (SNR). First, we analyze the performance of standard linear precoders, namely channel inversion (CI) and regularized CI (RCI), in downlink of cellular networks by deriving the received signal-to-interference-plus-noise ratio (SINR) of each user subject to both perfect and imperfect CSI. In this case, novel bounds on the asymptotic performance of linear precoders are derived, which determine howmuch accurate CSI should be to achieve a certain quality of service (QoS). By relying on the knowledge of error variance in advance, we propose an adaptive RCI technique to further improve the performance of standard RCI subject to CSI mismatch. We further consider transmit-power efficient design of wireless cellular networks. We propose two novel linear precoding techniques which can notably decrease the deployed power at transmit side in order to secure the same average output SINR at each user compared to standard linear precoders like CI and RCI. We also address a more sophisticated interference scenario, i.e., wireless interference networks, wherein each of the K transmitters communicates with its corresponding receiver while causing interference to the others. The most representative interference management technique in this case is interference alignment (IA). Unlike standard techniques like time division multiple access (TDMA) and frequency division multiple access (FDMA) where the achievable degrees of freedom (DoF) is one, with IA, the achievable DoF scales up with the number of users. Therefore, in this thesis, we quantify the asymptotic performance of IA under a generalized CSI mismatch model by deriving novel bounds on asymptotic mean loss in sum rate and the achievable DoF. We also propose novel least squares (LS) and minimum mean square error (MMSE) based IA techniques which are able to outperform standard IA schemes under perfect and imperfect CSI. Furthermore, we consider the implementation of IA in coordinated networks which enable us to decrease the number of deployed antennas in order to secure the same achievable DoF compared to standard IA techniques.

บรรณานุกรม :
Razavi, Seyed Morteza . (2557). Advanced interference management techniques for future wireless networks.
    กรุงเทพมหานคร : Edinburgh Research Archive, United Kingdom .
Razavi, Seyed Morteza . 2557. "Advanced interference management techniques for future wireless networks".
    กรุงเทพมหานคร : Edinburgh Research Archive, United Kingdom .
Razavi, Seyed Morteza . "Advanced interference management techniques for future wireless networks."
    กรุงเทพมหานคร : Edinburgh Research Archive, United Kingdom , 2557. Print.
Razavi, Seyed Morteza . Advanced interference management techniques for future wireless networks. กรุงเทพมหานคร : Edinburgh Research Archive, United Kingdom ; 2557.