Abstract
This paper proposes a novel interference cancellation technique using the concept of a distributed array, for the secondary use of the frequency resources in frequency division duplexing (FDD)-based cellular systems. In order to achieve efficient distributed interference cancellation, the secondary system exploit intervals for periodic training signals transmitted by FDD-time division multiple access (TDMA)-based cellular systems. We show that an efficient interference cancellation can be achieved by introducing helpers that decode the interference and transfer it to the secondary nodes. We take advantage of the high-speed links within the secondary system and devise a data compressing scheme that reduces time for transferring the decoded interference. We clarify the effectiveness of the proposed scheme by using computer simulation. As a parameter, the transmission quality between the helper and secondary nodes is varied. The results indicate that the proposed distributed interference cancellation is effective compared to a conventional adaptive array using a zero forcing algorithm, when the signal to noise ratio between the helper and the target secondary node is greater than 20 dB.
| Original language | English |
|---|---|
| Title of host publication | IEEE International Conference on Communications |
| Pages | 3044-3049 |
| Number of pages | 6 |
| DOIs | |
| Publication status | Published - 2008 |
| Externally published | Yes |
| Event | IEEE International Conference on Communications, ICC 2008 - Beijing Duration: 2008 May 19 → 2008 May 23 |
Other
| Other | IEEE International Conference on Communications, ICC 2008 |
|---|---|
| City | Beijing |
| Period | 08/5/19 → 08/5/23 |
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Keywords
- Distributed array
- FDD systems
- Interference information transfer
- Periodic tracing signal
- Secondary spectrum usage
ASJC Scopus subject areas
- Media Technology
Cite this
Distributed interference cancellation for dynamic spectrum sharing. / Nishimori, Kentaro; Yomo, Hiroyuki; Popovski, Petar; Takatori, Yasushi; Prasad, Ramjee; Kubota, Shuji.
IEEE International Conference on Communications. 2008. p. 3044-3049 4533609.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Distributed interference cancellation for dynamic spectrum sharing
AU - Nishimori, Kentaro
AU - Yomo, Hiroyuki
AU - Popovski, Petar
AU - Takatori, Yasushi
AU - Prasad, Ramjee
AU - Kubota, Shuji
PY - 2008
Y1 - 2008
N2 - This paper proposes a novel interference cancellation technique using the concept of a distributed array, for the secondary use of the frequency resources in frequency division duplexing (FDD)-based cellular systems. In order to achieve efficient distributed interference cancellation, the secondary system exploit intervals for periodic training signals transmitted by FDD-time division multiple access (TDMA)-based cellular systems. We show that an efficient interference cancellation can be achieved by introducing helpers that decode the interference and transfer it to the secondary nodes. We take advantage of the high-speed links within the secondary system and devise a data compressing scheme that reduces time for transferring the decoded interference. We clarify the effectiveness of the proposed scheme by using computer simulation. As a parameter, the transmission quality between the helper and secondary nodes is varied. The results indicate that the proposed distributed interference cancellation is effective compared to a conventional adaptive array using a zero forcing algorithm, when the signal to noise ratio between the helper and the target secondary node is greater than 20 dB.
AB - This paper proposes a novel interference cancellation technique using the concept of a distributed array, for the secondary use of the frequency resources in frequency division duplexing (FDD)-based cellular systems. In order to achieve efficient distributed interference cancellation, the secondary system exploit intervals for periodic training signals transmitted by FDD-time division multiple access (TDMA)-based cellular systems. We show that an efficient interference cancellation can be achieved by introducing helpers that decode the interference and transfer it to the secondary nodes. We take advantage of the high-speed links within the secondary system and devise a data compressing scheme that reduces time for transferring the decoded interference. We clarify the effectiveness of the proposed scheme by using computer simulation. As a parameter, the transmission quality between the helper and secondary nodes is varied. The results indicate that the proposed distributed interference cancellation is effective compared to a conventional adaptive array using a zero forcing algorithm, when the signal to noise ratio between the helper and the target secondary node is greater than 20 dB.
KW - Distributed array
KW - FDD systems
KW - Interference information transfer
KW - Periodic tracing signal
KW - Secondary spectrum usage
UR - http://www.scopus.com/inward/record.url?scp=51249115592&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=51249115592&partnerID=8YFLogxK
U2 - 10.1109/ICC.2008.573
DO - 10.1109/ICC.2008.573
M3 - Conference contribution
SN - 9781424420742
SP - 3044
EP - 3049
BT - IEEE International Conference on Communications
ER -