Name
Abstract | ||
|---|---|---|
The Interfering Broadcast Channel (IBC) applies to the downlink of cellular and heterogenous networks, which are limited by multi-user (MU) interference. The interference alignment (IA) concept has shown that interference does not need to be inevitable. In particular spatial IA in MIMO IBC allows for low latency. However, IA requires perfect and typically global Channel State Information at the Transmitter(s) (CSIT), whose acquisition does not scale with network size. Hence, designs that are optimal in terms of Degrees of Freedom (DoF) may not be so in terms of more relevant net DoF, accounting for CSI acquistion or at finite SNR. Also, the design of transmitters (Txs) and receivers (Rxs) is coupled and hence needs to be centralized or duplicated. Here we propose to take advantage of Massive MIMO simplifications, esp. for mmWave, by considering (multi-)path CSIT for crosslinks, which can be obtained without feedback. We consider a hierarchical cross/direct link beamformer design, maximizing Weighted Sum Rate (WSR) with partial CSIT at finite SNR, requiring on local CSIT. We also point out the use of receive antennas in genuine MU Massive MIMO. |
Year | DOI | Venue |
|---|---|---|
2014 | 10.1109/SPAWC.2014.6941308 | Signal Processing Advances in Wireless Communications |
Keywords | Field | DocType |
MIMO communication,array signal processing,broadcast channels,cellular radio,radiofrequency interference,CSI acquisition,DoF,IA concept,IBC,MU massive MISO,WSR,cellular networks,degrees of freedom,finite SNR,global channel state information at transmitter,heterogeneous networks,hierarchical cross-direct link beamformer design,interference alignment,interfering broadcast channel,multipath CSIT,multiuser interference,network size,pathwise MU massive MIMO,receive antennas,receivers,weighted sum rate,Channel State Information at the Transmitter (CSIT),Interfering Broadcast Channel (IBC),Massive MIMO,mmWave,pathwise channel models | Network size,Transmitter,Computer science,MIMO,Electronic engineering,Interference (wave propagation),Latency (engineering),Broadcast channels,Telecommunications link,Channel state information | Conference |
ISSN | Citations | PageRank |
2325-3789 | 1 | 0.37 |
References | Authors | |
19 | 4 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Yohan Lejosne | 1 | 36 | 4.24 |
| Manijeh Bashar | 2 | 4 | 1.10 |
| Dirk T. M. Slock | 3 | 801 | 86.45 |
| Yi Yuan-wu | 4 | 456 | 30.09 |