Abstract
Transmit beamforming is simple method to achieve the full diversity gain that is available in multiple antenna (MIMO) wireless systems. Unfortunately, the prior condition to achieve this gain requires perfect channel knowledge at both transmitter and receiver, which is impractical on account of limited feedback link. Therefore, for the practical system, codebook based feedback scheme is often employed, where the beamforming vector is selected from the codebook to maximize the output signal-to-noise ratio (SNR) at receiver, and the receiver only sends back the index of the best beamforming vector to the transmitter. In this paper we derive analytical expression of average bit error rate (BER) for the codebook based transmit beamforming MISO system over the feedback error channel. Using this analytical result, we present optimum codebook indexing scheme to improve the performance of this system. From some selected numerical examples we show that our proposed codebook indexing scheme can provide nonnegligible performance improvements in terms of average BER over the severe feedback error channel.
| Original language | English |
|---|---|
| Title of host publication | IEEE International Symposium on Information Theory - Proceedings |
| Pages | 2558-2562 |
| Number of pages | 5 |
| DOIs | |
| Publication status | Published - 2008 Sep 29 |
| Event | 2008 IEEE International Symposium on Information Theory, ISIT 2008 - Toronto, ON, Canada Duration: 2008 Jul 6 → 2008 Jul 11 |
Other
| Other | 2008 IEEE International Symposium on Information Theory, ISIT 2008 |
|---|---|
| Country | Canada |
| City | Toronto, ON |
| Period | 08/7/6 → 08/7/11 |
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ASJC Scopus subject areas
- Applied Mathematics
- Modelling and Simulation
- Theoretical Computer Science
- Information Systems
Cite this
Performance improvement of transmit beamforming MISO system using optimum codebook indexing over feedback error channel. / Lee, Jinhee; Ko, Young-Chai.
IEEE International Symposium on Information Theory - Proceedings. 2008. p. 2558-2562 4595453.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Performance improvement of transmit beamforming MISO system using optimum codebook indexing over feedback error channel
AU - Lee, Jinhee
AU - Ko, Young-Chai
PY - 2008/9/29
Y1 - 2008/9/29
N2 - Transmit beamforming is simple method to achieve the full diversity gain that is available in multiple antenna (MIMO) wireless systems. Unfortunately, the prior condition to achieve this gain requires perfect channel knowledge at both transmitter and receiver, which is impractical on account of limited feedback link. Therefore, for the practical system, codebook based feedback scheme is often employed, where the beamforming vector is selected from the codebook to maximize the output signal-to-noise ratio (SNR) at receiver, and the receiver only sends back the index of the best beamforming vector to the transmitter. In this paper we derive analytical expression of average bit error rate (BER) for the codebook based transmit beamforming MISO system over the feedback error channel. Using this analytical result, we present optimum codebook indexing scheme to improve the performance of this system. From some selected numerical examples we show that our proposed codebook indexing scheme can provide nonnegligible performance improvements in terms of average BER over the severe feedback error channel.
AB - Transmit beamforming is simple method to achieve the full diversity gain that is available in multiple antenna (MIMO) wireless systems. Unfortunately, the prior condition to achieve this gain requires perfect channel knowledge at both transmitter and receiver, which is impractical on account of limited feedback link. Therefore, for the practical system, codebook based feedback scheme is often employed, where the beamforming vector is selected from the codebook to maximize the output signal-to-noise ratio (SNR) at receiver, and the receiver only sends back the index of the best beamforming vector to the transmitter. In this paper we derive analytical expression of average bit error rate (BER) for the codebook based transmit beamforming MISO system over the feedback error channel. Using this analytical result, we present optimum codebook indexing scheme to improve the performance of this system. From some selected numerical examples we show that our proposed codebook indexing scheme can provide nonnegligible performance improvements in terms of average BER over the severe feedback error channel.
UR - http://www.scopus.com/inward/record.url?scp=52349102980&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=52349102980&partnerID=8YFLogxK
U2 - 10.1109/ISIT.2008.4595453
DO - 10.1109/ISIT.2008.4595453
M3 - Conference contribution
AN - SCOPUS:52349102980
SN - 9781424422579
SP - 2558
EP - 2562
BT - IEEE International Symposium on Information Theory - Proceedings
ER -