Analysis of polarization diversity for land mobile satellite system

A multiple‐input, multiple‐output broadcasting system with space, time, polarization, and labeling diversity

“…It is noted that this problem is common to the OSTBC, OSTPBC and USTLD systems that have previously been adapted for satellite broadcasting. 20,30,31,33 The satellite variant of the STPLD system should also consider more realistic satellite channel models, such as the hybrid model proposed by Hazra and Mitra. 61 Another relevant topic of interest is to implement the proposed system in a test-bed application.…”

“…Among these was the orthogonal space-time-polarization block code (OSTPBC) proposed by Wysocki and Wysocki, 29 which enhanced the Alamouti OSTBC by incorporating polarization diversity. The OSTPBC was extended to the context of satellite broadcast systems by Vineetha and Kirthiga 30 and Aparna et al 31 Another notable enhancement to the terrestrial Alamouti scheme is the uncoded space-time labeling diversity (USTLD) system proposed by Xu et al 32 This was recently extended to satellite broadcast systems by Quazi and Patel. 33 The preceding discussion mentions that previous works improved upon the Alamouti OSTBC by incorporating either polarization diversity or labeling diversity, and have been studied for both terrestrial and satellite contexts.…”

“…33 The preceding discussion mentions that previous works improved upon the Alamouti OSTBC by incorporating either polarization diversity or labeling diversity, and have been studied for both terrestrial and satellite contexts. [29][30][31][32][33] In this article, a system is proposed that is derived from the Alamouti OSTBC, and incorporates both polarization and labeling diversity. This is dubbed the space-time-polarization-labeling-diversity (STPLD) system.…”

“…27,32,38 For the STPLD system, theoretical results are obtained from (23). A theoretical expression for the BER performance of the OSTPBC is not explicitly shown in literature, [29][30][31] however one can be obtained from ( 23) by exploiting the similarity in the structure of the STPLD and OSTPBC systems. This is accomplished by setting 𝜔 1 = 𝜔 2 in (12) and substituting the result back into (23).…”

Prediction of Satellite Shadowing in Smart Cities with Application to IoT

“…To prevent link interruptions and keep the services within acceptable limits of quality, deep interleaving mechanisms (time diversity) and several constellation arrangements, including GEO (geostationary) or non-GEO satellites (satellite diversity), can be used. Space/polarization diversity based on Multiple Input Multiple Output (MIMO) techniques can also improve the QoS (Quality of Service) [20]. Finally, in the worst cases, in urban areas where the channel is hardest, we will have no choice but to use broadcast systems based on hybrid terrestrial satellite networks [21].…”