Switching between co‐located and distributed transmit diversity

Amini, Sahar; Choi, Kwonhue

doi:10.1049/iet-com.2015.0622

Cited by 2 publications

(5 citation statements)

References 31 publications

(48 reference statements)

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“…In this correlation model, a larger value implies a higher correlation between the TX antennas [3,6]. The results show that the performance of DTD is robust to the lack of RPC compared to the correlated CTD.…”

Section: Simulation and Numerical Resultsmentioning

confidence: 86%

“…This channel model is equivalent to the composite Rayleigh fading model, which can be expressed as follows [3]:…”

Section: System Modelmentioning

confidence: 99%

“…The term is the zero mean complex additive white Gaussian noise (AWGN) with variance 0 /2. As shown in [3,17], the inter-UE interference is excluded in (1) by assuming that the UEs are multiplexed in the orthogonal resources (such as code, time, or frequency domain). According to the principles of maximal ratio transmission, the optimal TD weighting vector is defined as follows:…”

Section: System Modelmentioning

confidence: 99%

“…On the other hand, in DTD, these antennas are far apart and have different slow fading factors. Hence, in DTD, there is another diversity called macrodiversity, which is not available in CTD [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…This is prepared by the CSI feedback from the receiver side to the transmitter side [1][2][3][4][5][6]8]. The practical performance of CTD and DTD suffers from several kinds of imperfections in CSI such as the feedback loop delay.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Analysis of Distributed Transmit Diversity with Outdated Diversity Weights

Amini

Choi

2017

Mobile Information Systems

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Distributed transmit diversity (DTD) technique that combines cooperative communications and diversity techniques is a suitable solution in 5th-generation (5G) systems. In this paper, we investigate the effect of receiver phase compensation (RPC) on the performance of DTD. We introduce new expressions for the average error rate of DTD in the presence of RPC. The derived expressions are useful for a large number of modulation schemes. We obtain further insights by comparing the RPC effect on DTD with different spatially correlated collocated transmit diversity (CTD). The new observations include the following: (1) In the case of feedback delay, the phase compensation (PC) is required on the receiver side in addition to the transmitter side. (2) In DTD with RPC, the system performance is improved by increasing the differences between the channel gain variances. However, this is the opposite of the case of DTD without RPC. (3) The correlated CTD is more sensitive to RPC than DTD. This sensitivity increases by enhancing the correlation between transmit (TX) antennas. (4) In the case where there is no delay for CTD or DTD, RPC does not affect the system's performance.

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Section: Simulation and Numerical Resultsmentioning

confidence: 86%

“…This channel model is equivalent to the composite Rayleigh fading model, which can be expressed as follows [3]:…”

Section: System Modelmentioning

confidence: 99%

Section: System Modelmentioning

confidence: 99%