Performance of super-orthogonal space-time trellis codes over Nakagami fading channels

Abstract

Super-orthogonal space-time trellis codes (SOSTTC) have recently been proposed as an efficient method to provide both diversity and coding gain for wireless communications. In this paper, the performance of SOSTTC over Nakagami fading channel is investigated. Simulation results with various fading parameter shows that the SOSTTCs designed for Rayleigh fading channels based on the rank, minimum determinant and trace criterion, are also suitable for Nakagami fading channels.

Improving the performance of free space optical systems: a space-time orthogonal frequency division modulation approach

“…It has therefore become necessary that solutions to this problem be devised. And one of such turbulence-mitigation solutions is the adaptation of efficient coding schemes that have hitherto been quite successful in RF systems like transmit antenna selection multiple-input multiple-output (MIMO) systems [7], turbo coded RF system [8], superorthogonal codes for Nakagami fading channels [9], binary phase-shift keying (BPSK) trellis coded orthogonal frequency division modulation (OFDM) MIMO system [10], MIMO OFDM RF systems [11] and hybrid concatenated codes with iterative decoding RF systems [12], for FSO systems. Other similar adaptable RF error mitigating techniques include concatenated low-density parity-check (LDPC) space-time codes [13], codeword diversity technique [14], and interleaving technique for high-speed OFDM systems [15], for FSO systems as reported in space-time coded FSO system as reported in [16] and space-time coded OFDM FSO system reported in [17].…”

“…sin(𝛼−𝛽)𝜋 (8) where 𝐼 (𝛼−𝛽) (𝑥) is expressed as (9). In order to simulate the effects of multipath fading in the channel, the simulation employs a tap model approach with delay lines and different tap points.…”