This paper investigates an attempt to improve performance of in-band full-duplex system in terms of both multiplexing gain and diversity order when time selectivity exists and instantaneous channel information is not available at the transmitter. The system, which utilizes spatial resource bi-directionally with shared time and frequency band, is called a 'bi-directional in-band full-duplex (BFD)' system. The use of full bandwidth and the reciprocity between time and frequency allows the BFD system to reduce the symbol duration. Focusing on this reduction in symbol duration, we can propose a space-time coded BFD (STC-BFD) scheme for improving both system capacity and reliability using Alamouti code. The proposed STC-BFD scheme with N antennas can achieve multiplexing gain of 2 with diversity order of 2(N - 2), whereas conventional half-duplex scheme is only able to achieve multiplexing gains of 1 with diversity orders of N in a fast fading environment without channel state information at the transmitter.
|Title of host publication||2014 11th International Symposium on Wireless Communications Systems, ISWCS 2014 - Proceedings|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|Number of pages||5|
|Publication status||Published - 2014 Oct 21|
|Event||2014 11th International Symposium on Wireless Communications Systems, ISWCS 2014 - Barcelona, Spain|
Duration: 2014 Aug 26 → 2014 Aug 29
|Name||2014 11th International Symposium on Wireless Communications Systems, ISWCS 2014 - Proceedings|
|Other||2014 11th International Symposium on Wireless Communications Systems, ISWCS 2014|
|Period||14/8/26 → 14/8/29|
Bibliographical notePublisher Copyright:
© 2014 IEEE.
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering
- Computer Networks and Communications