TY - GEN
T1 - Asymptotic rate analysis for non-orthogonal downlink multi-user systems with co-located and distributed antennas
AU - Wang, Junyuan
AU - Dai, Lin
PY - 2013
Y1 - 2013
N2 - This paper presents an asymptotic rate analysis for downlink multi-user systems with L base-station (BS) antennas either co-located or uniformly distributed within a circular cell. A representative non-orthogonal linear precoding scheme, maximum ratio transmission (MRT), is considered, based on which the effect of BS antenna layout on the intra-cell interference is characterized. The analysis reveals that the ratio σ of the number of BS antennas L and the number of users K is a key parameter that determines the rate performance of non-orthogonal downlink multi-user systems. Ergodic rates in the colocated antenna (CA) layout and the distributed antenna (DA) layout both logarithmically grow with σ, yet a higher rate is achieved in the DA case thanks to enhanced signal-to-interference ratio. © 2013 IEEE.
AB - This paper presents an asymptotic rate analysis for downlink multi-user systems with L base-station (BS) antennas either co-located or uniformly distributed within a circular cell. A representative non-orthogonal linear precoding scheme, maximum ratio transmission (MRT), is considered, based on which the effect of BS antenna layout on the intra-cell interference is characterized. The analysis reveals that the ratio σ of the number of BS antennas L and the number of users K is a key parameter that determines the rate performance of non-orthogonal downlink multi-user systems. Ergodic rates in the colocated antenna (CA) layout and the distributed antenna (DA) layout both logarithmically grow with σ, yet a higher rate is achieved in the DA case thanks to enhanced signal-to-interference ratio. © 2013 IEEE.
KW - Asymptotic rate analysis
KW - distributed antenna systems (DAS)
KW - downlink multi-user systems
KW - maximum ratio transmission (MRT)
UR - https://www.scopus.com/pages/publications/84881567913
UR - https://www.scopus.com/pages/publications/84881567913#tab=impact
U2 - 10.1109/WCNC.2013.6555078
DO - 10.1109/WCNC.2013.6555078
M3 - RGC 32 - Refereed conference paper (with host publication)
SN - 9781467359399
SP - 3219
EP - 3224
BT - IEEE Wireless Communications and Networking Conference, WCNC
T2 - 2013 IEEE Wireless Communications and Networking Conference, WCNC 2013
Y2 - 7 April 2013 through 10 April 2013
ER -