A pilot-based grouping method in satellite-terrestrial cooperative wireless networks

Abstract

In this paper we examine the performance of a satellite-terrestrial cooperative wireless network. We proposed a new grouping method, called pilot-based grouping method, to implement the space-time code in the satellite-terrestrial networks. The proposed method increases the total system channel capacity, and also saves unnecessary transmission power for the terrestrial stations. The proposed method focuses on finding out the best two signals coming from its neighboring terrestrial stations and uses the advantage of space diversity to improve the effect of channel fading. The numerical results show that the performance of ours proposed method is better than traditional grouping method.

Performance on Multiple Pilot-Based Grouping Methods in Satellite-Terrestrial Cooperative Wireless Networks

“…In order to solve the above problems. In [17], we proposed a grouping method called the "pilot-based grouping method". The system model of the pilot-based grouping method is shown in Figure 2.…”

“…The system model of the pilot-based grouping method is shown in Figure 2. In [17], every terrestrial station transmits signals in the frequency band (f1, f2 …, fN−1 Each user should be served by the best two relay stations to form an STC pair. Every sta tion will transmit a predefined pilot signal in the centre frequency to identify itself.…”

“…After detectin the pilot signal and recognizing the channel information from each station, the user wi allocate one of the same available channels from the best relay and the second relay t form an STC pair. In [17], every terrestrial station transmits signals in the frequency band (f 1 , f 2 . .…”

“…In order to improve the disadvantage in [16], we had proposed a grouping method to increase the channel capacity in [17]. In this paper, we present a modified grouping method to get better performance than we proposed in [17].…”

“…In order to improve the disadvantage in [16], we had proposed a grouping method to increase the channel capacity in [17]. In this paper, we present a modified grouping method to get better performance than we proposed in [17]. Moreover, the single relay allowed modified grouping method has been proposed to increase the channel capacity.…”