Abstract
In this era, the number of users in a network is increasing tremendously at a faster rate; as a consequence, quality of service (QoS) is drastically deteriorating. To compensate such kinds of problems, we attempted to enhance the QoS of the network, which leads to an improvement in throughput, link quality, spectral efficiency, and many more. To meet the requirements mentioned above, many researchers intervene to advance and propose different techniques with an appropriate design methodology. In this work, we try to emphasize symbol error rate (SER) and frame error rate (FER) by implementing some of the existing space-time coding techniques like Space-Time Trellis Coding (STTC), multilevel space-time trellis coding (MLSTTC), and grouped multilevel space-time trellis coding (GMLSTTC). Though all these techniques are proved to be efficient enough, we explicitly included a powerful method of cooperative diversity-based spectrum sensing in cognitive radio scenario. From this analysis, we landed on to the conclusion that this technique is far better to deal with all these parameters, which can improve the QoS of the network. This paper has also analyzed the effect of the proposed model of GMLSTTC with cognitive radio on various deployment setups such as urban, suburban, and rural macrodeployment setup of the ITU-R M.2135 standard.
Highlights
In today’s technological era, the thirst for a wireless communication system is growing worldwide
Various data duplicates of each portable center are achieved on a destination hub. e execution that appeared in the trial consequence of the cooperative multilevel space-time trellis coding (MLSTTC) strategy is better in correlation with the current MLSTTC plans. e space-time coding (STC) method used in [2] depicts the use of OFDM (Orthogonal Frequency Division Multiplexing) framework with the STC
Space-time block codes (STBCs) is applied at the end of the transmitter to examine the additive white Gaussian noise (AWGN) fading channel of the OFDM frame. e prior technique uses several modulation methods like quadrature amplitude modulation (QAM) and binary phase shift key (BPSK), which are analyzed based on bit error rate (BER) and signalto-noise ratio (SNR)
Summary
In today’s technological era, the thirst for a wireless communication system is growing worldwide. E prior technique uses several modulation methods like quadrature amplitude modulation (QAM) and binary phase shift key (BPSK), which are analyzed based on BER and SNR (signalto-noise ratio) Another differential encoding and disentangling procedure is proposed in [3] for differential-distributed space timing coding (DDSTC) frameworks over the slow-fading frequency selective channels with multiple relays having imperfect synchronization. In [8], assembled grouped multilevel space-time trellis codes (GMLSTTC), beamforming, and an adaptive array of the assembled cooperative diversity antenna are united for the design of a new system using state-of-the-art information using the channel at the transmitter (CSIT). E main contribution of the paper is represented in terms of proposing a model in which the GMLSTTC is applied to the cognitive radio scenario for improving the QoS parameters of the system in terms of error rate performance, coding gain, and throughput. Assume the coefficient of the channel of the jth transmitting antenna and ith receiving antenna at time t is hj,i(t), where hj,i(t) is the fading coefficient between transmit antenna i and receive antenna j at time t
Sign-in/Register to view highlights & summary 
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call