A Time Division Multiple Access - Time Division Duplex combined with an Alternated Frequency Duplexer for Wireless Personal Communications
スポンサーリンク
概要
- 論文の詳細を見る
An increase in the system capacity and maximum user bit rate is required for wireless multimedia communications that offer high speed signal transmission such as simultaneous voice and data transmission. This paper proposes a Time Division Multiple Access - Time Division Duplex method combined with an Alternated Frequency Duplexer (TDMA/TDD-AF) for TDMA based wireless personal communications. The newly proposed duplexing method uses the same frequency band and all time slots within a TDMA frame for both up-stream and down-stream transmission. This enables a two-fold increase in the number of time slots within a TDMA frame and the maximum user bit rate compared with the conventional TDMA/TDD method. Transmitter diversity is also applied to improve the transmission quality under multipath fading environments. The traffic performance of the proposed method is approximated theoretically compared with the conventional TDMA/TDD systems on the assumption that an infinite number of terminals are in a cell. The results indicate that the TDMA/TDD-AF method significantly improves the blocking probability when the system is asynchronized among adjacent cells and the number of usable carriers is high.
- 社団法人電子情報通信学会の論文
- 1996-11-25
著者
-
Kubota Shuji
NTT Radio Communication Systems Laboratories
-
Kubota Shuji
Ntt R&d Management Dept.
-
Kubota S
Ntt R And D Management Dep. Tokyo Jpn
-
KAWAZOE Katsuhiko
NTT Technology and Development Support Center
関連論文
- Bit-Stream-Arranged Weighted Modulation Scheme for Low Delay Spread Frequency Selective Fading Channels(Special Section on Fundamentals of Multi-dimensional Mobile Information Network)
- Bit Significance Selective Frequency Diversity Transmission
- Phase Ambiguity Resolver for PCM Sound Broadcasting Satellite Service with Low Power Consumption Viterbi Decoder Employing SST Scheme
- VLSI Implemented 60 Mb/s QPSK/OQPSK Burst Digital Demodulator for Radio Application (Special Issue on Multimedia, Analog and Processing LSIs)
- A New Burst Coherent Demodulator for Microcellular TDMA/TDD Systems (Special Issue on Personal, Indoor and Mobile Radio Communications)
- A New Fully-Digitalized π/4-Shift QPSK Modulator for Personal Communication Terminals (Special Issue on Personal, Indoor and Mobile Radio Communications)
- A Digitalized Quadrature Modulator for Fast Frequency Hopping
- Semi-Autonomous Synchronization among Base Stations for TDMA-TDD Communication Systems (Special Issue on Personal, Indoor and Mobile Radio Communications)
- A Suitable Combination of Modulation and FEC Schemes for Satellite Digital Video Communication Networks (Special Issue on Satellite Communications Networking and Applications)
- A Frequency Utilization Efficiency Improvement on Superposed SSMA-QPSK Signal Transmission over High Speed QPSK Signals in Nonlinear Channels (Special Issue on Satellite Communications Networking and Applications)
- A Time Division Multiple Access - Time Division Duplex combined with an Alternated Frequency Duplexer for Wireless Personal Communications
- An FFT Interference Detection Scheme for Interference Suppression in Digital Satellite Communication Systems
- An Integrated Interference Suppression Scheme with An Adaptive Equalizer for Digital Satellite Communication Systems
- High Capacity and Wide Coverage Cell Station for Personal Communication Systems
- Fully Digital Burst Modem for Satellite Multimedia Communication Systems (Special Issue on Advances in Satellite Communications toward Multimedia Era)
- Ultra-High-Speed and Universal-Coding-Rate Viterbi Decoder VLSIC : SNUFEC VLSI (Special Issue on Multimedia, Analog and Processing LSIs)