Abstract
Because of the high BER (Bit Error Rate), low time delay and low channel transmission efficiency of HAPS (High Altitude Platform Station) in the near space. The link budget of HAPS and channel model are proposed in this paper. According to the channel characteristic, the channel model is set up, combined with different CNR (Carrier Noise Ratio), elevation angle, coding situations of wireless communication link by using Hamming code, PSK (Pulse Shift Keying) and Golay code respectively, then the situations of link quality and BER are analyzed. The simulation results show that the established model of the link budget and channel are suitable for the theoretical analysis results. The elevation of the HAPS communication link is smaller while the BER is increasing. The case of channel in the coding is better than in the un-coded situation. When every bit power and thermal noise power spectral density is larger, the BER of the HAPS communication link is becoming smaller.
Highlights
As an airspace that humans have not systematically developed and utilized, near space is an important operational space for the future air and space weaponry system, and it is a new “strategic place” for the great powers [1,2]
The high-altitude platform station (HAPS) is a platform that is stuck in a space of 20 to 50 km in height and is stationary relative to a specific location on the earth [3,4]
HAPS can be seen as a communication system between a terrestrial communication system and a satellite communication system
Summary
As an airspace that humans have not systematically developed and utilized, near space is an important operational space for the future air and space weaponry system, and it is a new “strategic place” for the great powers [1,2]. The authors of [19,20,21,22,23], for high-altitude platform CDMA communication systems, established a wireless link model in quasi-stationary state. Tsiropoulou et al [37] tackled the problem of joint users’ uplink transmission power and data rate allocation in multi-service two-tier femtocell networks. Tsiropoulou et al [39] proposed a novel utility-based game theoretic frame work towards simultaneously allocating users’ uplink transmission power and rate in multi-service two-tier open-access femtocell networks. These literatures did not consider the Hamming, PSK and Golay code mode.
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