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Performance Analysis of Simultaneous Collision-Free Duplexing Method in Point-to-Multipoint Environment
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- Authors
- Nam-I Kim, Dong-Ho Cho
- Issue Date
- 2021-09
- Citation
- IEEE Communications Letters, v.25, no.9, pp.2884-2888
- ISSN
- 1089-7798
- Publisher
- IEEE
- Language
- English
- Type
- Journal Article
- Abstract
- In this letter, we have studied how to use simultaneous collision-free duplexing (SCD) in point-to-multipoint environment. SCD is a method exchanging uplink and downlink signals simultaneously using the same resource for each link and has the advantages in that it does not need complicated self-interference cancellation unlike full duplexing. In addition, SCD is different from dynamic time division duplexing (D-TDD) in which interlink interference can be completely avoided. Therefore, to analyze the effect of interlink interference on SCD, we have derived the upper bound of link capacity and the required value of interlink isolation level for better SCD performance than D-TDD. We have verified the analyzed isolation level and confirmed that SCD has good performance even in practical point-to-multipoint environment through simulation.
- KSP Keywords
- Full duplexing, Link capacity, Performance analysis, Self-Interference Cancellation, Time division duplexing(TDD), collision-free, isolation level, point-to-multipoint, uplink and downlink, upper bound