TY - GEN
T1 - Joint signal and channel state information compression for uplink network MIMO systems
AU - Kang, Jin Kyu
AU - Simeone, Osvaldo
AU - Kang, Joonhyuk
AU - Shamai, Shlomo
PY - 2013
Y1 - 2013
N2 - In the uplink of network MIMO systems, in order to cope with backhaul capacity limitations, base stations (BSs) must compress the received baseband data signal and the channel state information (CSI) for communication to the central unit (CU). Assuming ergodic fading, an Estimate-Compress-Forward (ECF) approach is investigated, whereby the BSs perform CSI estimation and forward a compressed version of the CSI to the CU. This approach contrasts with the previously studied Compress-Forward-Estimate (CFE) strategy, whereby CSI estimation is performed at the CU, and is motivated by the information-theoretic optimality of separate estimation and compression. Various ECF schemes are proposed that perform either separate or joint compression of estimated CSI and received baseband signal. Via numerical results, it is shown that a proper design of ECF strategies leads to substantial performance gains compared to the CFE approach.
AB - In the uplink of network MIMO systems, in order to cope with backhaul capacity limitations, base stations (BSs) must compress the received baseband data signal and the channel state information (CSI) for communication to the central unit (CU). Assuming ergodic fading, an Estimate-Compress-Forward (ECF) approach is investigated, whereby the BSs perform CSI estimation and forward a compressed version of the CSI to the CU. This approach contrasts with the previously studied Compress-Forward-Estimate (CFE) strategy, whereby CSI estimation is performed at the CU, and is motivated by the information-theoretic optimality of separate estimation and compression. Various ECF schemes are proposed that perform either separate or joint compression of estimated CSI and received baseband signal. Via numerical results, it is shown that a proper design of ECF strategies leads to substantial performance gains compared to the CFE approach.
KW - Compress and forward
KW - Distributed compression
KW - Imperfect CSI
KW - Limited backhaul
KW - Uplink network MIMO
UR - http://www.scopus.com/inward/record.url?scp=84897708612&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84897708612&partnerID=8YFLogxK
U2 - 10.1109/GlobalSIP.2013.6737031
DO - 10.1109/GlobalSIP.2013.6737031
M3 - Conference contribution
AN - SCOPUS:84897708612
SN - 9781479902484
T3 - 2013 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2013 - Proceedings
SP - 875
EP - 878
BT - 2013 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2013 - Proceedings
T2 - 2013 1st IEEE Global Conference on Signal and Information Processing, GlobalSIP 2013
Y2 - 3 December 2013 through 5 December 2013
ER -