13.8. Conclusion
This chapter gives an overview of some coding aspects of dynamic spectrum access with cognitive radios. The spectrum pooling concept is presented for secondary usage of spectrum. The loss on a secondary user link is modeled as an erasure and erasure tolerant coding has been proposed to compensate for it.
Traditional erasure codes such as Reed–Solomon codes and tornado codes have been discussed as fixed erasure codes. Then digital fountain codes such as LT codes and raptor codes have been presented as rateless codes. Multiple description codes have been discussed as a source coding approach for robust communication in secondary usage unreliable scenario. Their applications in secondary spectrum access with cognitive radios have been discussed. Some simulation results on LT codes decoding error probability are also presented.
Get Cognitive Networks: Towards Self-Aware Networks now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
