Journal ArticleDOI
Error Performance of Rotated Phase Shift Keying Modulation over Fading Channels
TLDR
It is shown that rotated signal constellations with component interleaving improve the performance of M-PSK significantly as compared to the unrotated one over Rayleigh and Ricean fading channels.Abstract:
In this paper, the modulation diversity is used to improve the performance of M-PSK modulation over fading channels. Modulation diversity can be achieved by rotating the signal constellation and using component interleaving. We derive symbol error probability expressions for rotated uncoded M-PSK over Ricean fading channels and obtain optimal rotation angles for M-PSK (M = 2, 4, 8). We show that rotated signal constellations with component interleaving improve the performance of M-PSK significantly as compared to the unrotated one over Rayleigh and Ricean fading channels. For example, when the ratio of the direct path power to the multipath signal power, K is 0 and 10, 8 and 1.5 dB gains are obtained, respectively, at a symbol error probability of 10?3 for 8PSK modulation. We also show that as K gets larger, the gain obtained by the rotation rapidly decreases. We develop a new asymmetric 8PSK signal constellation obtained from two QPSK signal constellations that are optimally rotated by different angles. This asymmetric 8PSK and also the rotated 8PSK signal constellation together with component interleaving are applied to four-state trellis-coded schemes. Simulation results show that these new schemes provide good performance improvements over the original TCM schemes and previous relevant works over Rayleigh and Ricean fading channels.read more
Citations
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Journal ArticleDOI
Performance analysis of modulation diversity with OSTBC transmission over Nakagami-m fading channels
TL;DR: In this article, the performance of modulation diversity with multiple-input multiple-output (MIMO) transmission is studied over flat Nakagami-m fading channels with arbitrary fading parameter m. In the system, orthogonal space-time block coding and maximal ratio combining like combiner are used for transmission and reception, respectively.
Journal ArticleDOI
Performance of rotated PSK modulation in Nakagami-m fading channels
Ahmet Yilmaz,Oguz Kucur +1 more
TL;DR: Performance of Rotation & Component Interleaving Diversity over frequency non-selective and slowly Nakagami-m fading channels for arbitrary fading parameter m improves significantly and diversity order of the systems doubles as compared to those of the equivalent unrotated systems.
Journal ArticleDOI
Performance analysis of maximal ratio combining with transmit antenna selection and signal space diversity under exponential antenna correlation
Serdar Ozyurt,Oguz Kucur +1 more
TL;DR: It is shown that the error performance of the system can be improved with almost no extra complexity or cost and it is also demonstrated that the proposed scheme with SSD is more resistant against the studied correlation model as compared to the original scheme without SSD.
Journal ArticleDOI
Improved spectral efficiency of SM-OFDM using a set of rotated constellations
TL;DR: A new SM-OFDM-based scheme is proposed, which adds another element of information in the transmitted SM-data block consisting of a chosen constellation among the available rotated set, and permits a trade-off between the quality of the communication and the achieved spectral efficiency.
Proceedings ArticleDOI
Performance analysis of rotated PSK over Nakagami-m fading channels
Ahmet Yilmaz,Oguz Kucur +1 more
TL;DR: In this paper, rotation of signal constellation together with component interleaving is applied to the original PSK scheme and performance of rotated Phase Shift Keying (PSK) scheme is analyzed over frequency nonselective slowly Nakagami-m fading channels.
References
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Book
Digital Communication over Fading Channels
TL;DR: The book gives many numerical illustrations expressed in large collections of system performance curves, allowing the researchers or system designers to perform trade-off studies of the average bit error rate and symbol error rate.
Book
Digital Communication over Fading Channels: A Unified Approach to Performance Analysis
TL;DR: In this paper, a diversity technique for communication over fading channels in the presence of interference is proposed. But the technique is not suitable for all channels and it is not applicable to all channels.
Journal ArticleDOI
Good lattice constellations for both Rayleigh fading and Gaussian channels
TL;DR: A new family of lattice constellations, based on complex algebraic number fields, which have good performance on Rayleigh fading channels are presented and some of these lattices also present a reasonable packing density and thus may be used at the same time over a Gaussian channel.
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