Abstract
In this contribution, we focus on a frequency domain two-user Multiple-Input-Single-Output Broadcast Channel (MISO BC) where the transmitter has imperfect and (un)matched Channel State Information (CSI) of the two users in two subbands. We provide an upper-bound to the Degrees-of-Freedom (DoF) region, which is tight compared to the state of the art. By decomposing the subbands into subchannels according to the CSI feedback qualities, we interpret the DoF region as the weighted-sum of that in each subchannel. Moreover, we study the sum DoF loss when employing sub-optimal schemes, namely Frequency Division Multiple Access (FDMA), Zero-Forcing Beamforming (ZFBF) and the S 3 3/2 scheme proposed by Tandon et al. The results show that by switching among the sub-optimal strategies, we can obtain at least 80% and 66.7% of the optimal sum DoF performance for the unmatched and matched CSIT scenario respectively.1
| Original language | English |
|---|---|
| Title of host publication | 2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2013 |
| Pages | 1168-1173 |
| Number of pages | 6 |
| DOIs | |
| Publication status | Published - 2013 |
| Externally published | Yes |
| Event | 2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2013 - London, United Kingdom Duration: 2013 Sep 8 → 2013 Sep 11 |
Other
| Other | 2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2013 |
|---|---|
| Country | United Kingdom |
| City | London |
| Period | 13/9/8 → 13/9/11 |
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ASJC Scopus subject areas
- Electrical and Electronic Engineering
Cite this
MISO Broadcast Channel with imperfect and (Un)matched CSIT in the frequency domain : DoF region and transmission strategies. / Hao, Chenxi; Clercks, Bruno.
2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2013. 2013. p. 1168-1173 6666315.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - MISO Broadcast Channel with imperfect and (Un)matched CSIT in the frequency domain
T2 - DoF region and transmission strategies
AU - Hao, Chenxi
AU - Clercks, Bruno
PY - 2013
Y1 - 2013
N2 - In this contribution, we focus on a frequency domain two-user Multiple-Input-Single-Output Broadcast Channel (MISO BC) where the transmitter has imperfect and (un)matched Channel State Information (CSI) of the two users in two subbands. We provide an upper-bound to the Degrees-of-Freedom (DoF) region, which is tight compared to the state of the art. By decomposing the subbands into subchannels according to the CSI feedback qualities, we interpret the DoF region as the weighted-sum of that in each subchannel. Moreover, we study the sum DoF loss when employing sub-optimal schemes, namely Frequency Division Multiple Access (FDMA), Zero-Forcing Beamforming (ZFBF) and the S 3 3/2 scheme proposed by Tandon et al. The results show that by switching among the sub-optimal strategies, we can obtain at least 80% and 66.7% of the optimal sum DoF performance for the unmatched and matched CSIT scenario respectively.1
AB - In this contribution, we focus on a frequency domain two-user Multiple-Input-Single-Output Broadcast Channel (MISO BC) where the transmitter has imperfect and (un)matched Channel State Information (CSI) of the two users in two subbands. We provide an upper-bound to the Degrees-of-Freedom (DoF) region, which is tight compared to the state of the art. By decomposing the subbands into subchannels according to the CSI feedback qualities, we interpret the DoF region as the weighted-sum of that in each subchannel. Moreover, we study the sum DoF loss when employing sub-optimal schemes, namely Frequency Division Multiple Access (FDMA), Zero-Forcing Beamforming (ZFBF) and the S 3 3/2 scheme proposed by Tandon et al. The results show that by switching among the sub-optimal strategies, we can obtain at least 80% and 66.7% of the optimal sum DoF performance for the unmatched and matched CSIT scenario respectively.1
UR - http://www.scopus.com/inward/record.url?scp=84893266570&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84893266570&partnerID=8YFLogxK
U2 - 10.1109/PIMRC.2013.6666315
DO - 10.1109/PIMRC.2013.6666315
M3 - Conference contribution
AN - SCOPUS:84893266570
SN - 9781467362351
SP - 1168
EP - 1173
BT - 2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2013
ER -