Abstract
There are many benefits in using time division duplex (TDD) instead of frequency division duplex (FDD) schemes in fixed wireless cellular systems. To name a few; channel reciprocity for a single carrier frequency used on both up and down-links will allow easy access to channel state information, reduced complexity of RF design, much higher flexibility in handling dynamic traffic, simpler frequency plan, etc. However, there exists a serious limiting factor in using dynamic-TDD (D-TDD) in cellular systems. This is due to a steady interference on an uplink in any cell caused by down-link transmissions in other cells. Simulation results show in D-TDD cellular systems, performance is unacceptable, when omni-directional antenna is used at base stations. Simulation results also suggest great potential for smart antennas in achieving substantial performance improvement in fixed D-TDD bandwidth-on-demand wireless systems.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1078-1085 |
| Number of pages | 8 |
| Journal | IEEE Vehicular Technology Conference |
| Volume | 3 |
| Issue number | 52 ND |
| State | Published - 2000 |
| Event | 52nd Vehicular Technology Conference (IEEE VTS Fall VTC2000) - Boston, MA, USA Duration: Sep 24 2000 → Sep 28 2000 |
All Science Journal Classification (ASJC) codes
- Computer Science Applications
- Electrical and Electronic Engineering
- Applied Mathematics