Implementation Aspects of Turbo-Decoders for Future Radio Applications
نویسندگان
چکیده
Turbo-Codes will most likely be employed in future radio systems as a channel coding scheme for highrate data services. However, Turbo-Decoding is a comparatively complex task. To obtain efficient decoder implementations, the system design space has to be explored on multiple levels. In this paper, we span the system design space for Turbo-Codes and describe a method of exploration, while focusing on the implementation-dependent part. The design decisions taken during exploration are rated regarding complexity, throughput and power consumption. The second part of our paper evaluates sample software and hardware implementations of a 2Mbit s Turbo-Decoder.
منابع مشابه
Low Power Implementation of a Turbo-Decoder on Programmable Architectures1
Low Power is an extremely important issue for future mobile radio systems. Channel decoders are essential building blocks of base-band signal processing units in mobile terminal architectures. Thus low power implementations of advanced channel decoding techniques are mandatory. In this paper we present a low power implementation of the most sophisticated channel decoding algorithm (Turbo-decodi...
متن کاملVLSI-implementation issues of turbo trellis-coded modulation
Turbo Trellis-Coded Modulation (TTCM) is a very promising approach for future communication systems. It combines the advantages of channel coding with multilevel signals and the powerful Turbo-Codes concept. In this paper we consider VLSI implementation aspects of TTCM. We show that techniques, known from binary Turbo-Decoders, can be applied to TTCM to reduce the implementation complexity sign...
متن کاملOn chip interconnects for multiprocessor turbo decoding architectures
Turbo codes are among the most powerful and widely adopted error correcting codes in several communication applications. The high throughput requirements of current and future standards impose that parallel decoders composed by multiple interconnected processing elements are used at the receiver side to efficiently decode turbo codes. In this work, on chip interconnects for multiprocessor turbo...
متن کاملSimplified MAP Algorithm Suitable for Implementation of Turbo Decoders
A simplification of the MAP decoder for use in turbo decoders is presented. The simplification eliminates the need for a ROM or multiplexor-tree lookup table and replaces it with a constant value. Simulations show that the performance of turbo decoders is not adversely affected by this simplification.
متن کاملAdvanced Implementation Issues of Turbo-Decoders
This paper presents a new renormalization scheme for Turbo-decoders and a novel early stop criterion which can be used to considerably reduce implementation complexity.
متن کامل