Dynamic time-division-duplex wireless local loop

Junsong Li, Shayan Farahvash, Mohsen Kavehrad, Reinaldo Valenzuela

Research output: Contribution to journalArticle

6 Citations (Scopus)

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 languageEnglish (US)
Pages (from-to)1078-1085
Number of pages8
JournalIEEE Vehicular Technology Conference
Volume3
Issue number52 ND
StatePublished - 2000

Fingerprint

Cellular Systems
Division
Smart Antennas
Directional Antenna
Traffic Dynamics
Cell
Reciprocity
Channel State Information
Uplink
Smart antennas
Dynamic Systems
System Performance
Channel state information
Simulation
Limiting
Interference
Flexibility
Bandwidth
Base stations
Antennas

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

Cite this

Li, J., Farahvash, S., Kavehrad, M., & Valenzuela, R. (2000). Dynamic time-division-duplex wireless local loop. IEEE Vehicular Technology Conference, 3(52 ND), 1078-1085.
Li, Junsong ; Farahvash, Shayan ; Kavehrad, Mohsen ; Valenzuela, Reinaldo. / Dynamic time-division-duplex wireless local loop. In: IEEE Vehicular Technology Conference. 2000 ; Vol. 3, No. 52 ND. pp. 1078-1085.
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Li, J, Farahvash, S, Kavehrad, M & Valenzuela, R 2000, 'Dynamic time-division-duplex wireless local loop', IEEE Vehicular Technology Conference, vol. 3, no. 52 ND, pp. 1078-1085.

Dynamic time-division-duplex wireless local loop. / Li, Junsong; Farahvash, Shayan; Kavehrad, Mohsen; Valenzuela, Reinaldo.

In: IEEE Vehicular Technology Conference, Vol. 3, No. 52 ND, 2000, p. 1078-1085.

Research output: Contribution to journalArticle

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Li J, Farahvash S, Kavehrad M, Valenzuela R. Dynamic time-division-duplex wireless local loop. IEEE Vehicular Technology Conference. 2000;3(52 ND):1078-1085.