TY - GEN
T1 - Downlink spectral efficiency of ZF precoding based multi-user MIMO system over weibull fading channel
AU - Tiwari, Keerti
AU - Thakur, Prabhat
N1 - Publisher Copyright:
© Springer Nature Singapore Pte Ltd. 2018.
PY - 2018
Y1 - 2018
N2 - Frequency division duplex (FDD) and time-division duplex (TDD) are two different ways of executing the downlink and uplink transmission over a given frequency band. In which, TDD is the superior mode due to less pilots’ requirement than FDD and its highly scalable quality, where the pilot length is independent of the number of base station (BS) antennas. The linear precoding scheme i.e., zero forcing (ZF) is simple and easy to implement. Therefore, this paper uses ZF for the performance comparison of multi-user multiple-input multiple-output (MU MIMO) system on the basis of downlink spectral efficiency (SE) obtained with perfect channel state information (CSI) and with CSI estimated through pilot sequences of a specified length. The SE is illustrated as a function of the number of BS antennas using TDD and FDD mode over a Weibull fading channel which considers favorable propagation case. The SE increases even after decreasing the signal to noise ratio (SNR). It is practically viable to organize FDD systems with many antennas, mainly for slow-varying channels where we can take a large pilot overhead, but TDD is preferable in this situation.
AB - Frequency division duplex (FDD) and time-division duplex (TDD) are two different ways of executing the downlink and uplink transmission over a given frequency band. In which, TDD is the superior mode due to less pilots’ requirement than FDD and its highly scalable quality, where the pilot length is independent of the number of base station (BS) antennas. The linear precoding scheme i.e., zero forcing (ZF) is simple and easy to implement. Therefore, this paper uses ZF for the performance comparison of multi-user multiple-input multiple-output (MU MIMO) system on the basis of downlink spectral efficiency (SE) obtained with perfect channel state information (CSI) and with CSI estimated through pilot sequences of a specified length. The SE is illustrated as a function of the number of BS antennas using TDD and FDD mode over a Weibull fading channel which considers favorable propagation case. The SE increases even after decreasing the signal to noise ratio (SNR). It is practically viable to organize FDD systems with many antennas, mainly for slow-varying channels where we can take a large pilot overhead, but TDD is preferable in this situation.
KW - Channel state information (CSI)
KW - Frequency division duplex (FDD)
KW - Spectral efficiency (SE)
KW - Time-division duplex (TDD)
KW - Weibull fading
KW - Zero forcing (ZF)
UR - http://www.scopus.com/inward/record.url?scp=85048633236&partnerID=8YFLogxK
U2 - 10.1007/978-981-10-8240-5_48
DO - 10.1007/978-981-10-8240-5_48
M3 - Conference contribution
AN - SCOPUS:85048633236
SN - 9789811082399
T3 - Lecture Notes in Electrical Engineering
SP - 431
EP - 437
BT - Advanced Computational and Communication Paradigms - Proceedings of International Conference on ICACCP 2017
A2 - Bhattacharyya, Siddhartha
A2 - Gandhi, Tapan
A2 - Sharma, Kalpana
A2 - Dutta, Paramartha
PB - Springer Verlag
T2 - 1st International Conference on Advanced Computational and Communication Paradigms, ICACCP 2017
Y2 - 8 September 2017 through 10 September 2017
ER -