Abstract
Abstract Alamouti space–frequency coding provides additional frequency diversity, especially in multipath propagation environments. This article addresses a new modeling of the Alamouti code multiple input single output (MISO) in a single frequency network(SFN) for two, three, and four transmitters, and different types of coding and modulations in the DVB-T2 (Digital Video Broadcasting Terrestrial second generation). Classical SFN, Alamouti MISO, and combined SFN with Alamouti MISO (called SFN-2x1 Alamouti MISO) are compared and analyzed. Performance evaluations are made for two, three, or four transmission antennas through 0-dB Echo profile, TU6 mobile channel, unbalanced received power and rotated constellation. The obtained results show clearly that the performance of an SFN network using 0-dB Echo profile with Alamouti MISO is only better than a pure SFN for two and three antennas. Moreover, an SFN based on four antennas (receiving from four antennas) has almost the same performance as SFN-2x1 Alamouti MISO.
Highlights
The Digital Video Broadcasting Terrestrial standard (DVB-T) supports singlefrequency networks (SFNs) to get better reception quality [1,2,3], the presence of similar-strength signals from two transmitters in a network causes a significant loss of margin because the resulting channel can have deep “notches”
Proposed modeling of the Alamouti multiple input single output (MISO) in DVB-T2 We study the performance of SFN-2x1 Alamouti MISO compared to classical SFN for two, three, and four transmitters
We have studied and evaluated the expected performance for the transmission-based Alamouti MISO technique, which is an option in the DVB-T2 standard
Summary
The Digital Video Broadcasting Terrestrial standard (DVB-T) supports singlefrequency networks (SFNs) to get better reception quality [1,2,3], the presence of similar-strength signals from two transmitters in a network causes a significant loss of margin because the resulting channel can have deep “notches”. The zones labeled (3) correspond to reception zones based on an SFN network from two pair of antennas (A1 + A2 or B1 + B2) and where each pair of antennas (A1 + A2) and (B1 + B2) refer to the mode “A” and “B” transmissions, respectively. 3) The zones labeled (4) refer to the reception zones from three antennas (A1 + A2 + B1 or A1 + B1 + B2) that represent the 2x1 Alamouti MISO in an SFN These zones are considered as combined SFN-2x1 Alamouti MISO networks allowing diversity transmissions in an SFN network and according with the following configuration cases: i).
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