NDLI: Adaptive Energy-Efficient Architecture for WCDMA Channel Estimation

Content Provider	IEEE Xplore Digital Library
Author	Rakosi, Z.E. Zheng Wang Chattopadhyay, A.
Copyright Year	2011
Abstract	Due to the fast changing wireless communication standards coupled with strict performance constraints, the demand for flexible yet high-performance architectures is increasing. To tackle the flexibility requirement, Software-Defined Radio (SDR) is emerging as an obvious solution, where the underlying hardware implementation is tuned via software layers to the varied standards depending on power-performance and quality requirements leading to adaptable, cognitive radio. To design the hardware architecture for SDR is an interesting challenge, which involves determining the perfect balance of flexibility and performance for the target algorithmic kernels. In this paper, we conduct such a design case study for representatives of two complexity classes of WCDMA channel estimation algorithms. The two algorithms, polynomial channel estimation and weighted multi-slot averaging, differ also significantly in their algorithmic performance, difference which can be exploited in cognitive radio. Furthermore, we propose new design guidelines for highly specialised architectures that provide just enough flexibility to support multiple applications, targeting adaptability, low power and high-performance. Our experiments with various design points show that the resulting architecture meets the performance constraints of WCDMA and offers weak programmability to tune the architecture depending on power/performance constraints of SDR.
Starting Page	309
Ending Page	314
File Size	879151
Page Count	6
File Format	PDF
ISBN	9781457717345
e-ISBN	9780769545516
DOI	10.1109/ReConFig.2011.7
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-11-30
Publisher Place	Mexico
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Algorithm design and analysis SDR WCDMA channel estimation High-level ADL based design Channel estimation Computer architecture Spread spectrum communication Polynomials Complexity theory Multiaccess communication Energy-efficient architecture
Content Type	Text
Resource Type	Article

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