Design of trellis decoders for block-coded modulation schemes

作     者：Petronio, MA Carrasco, RA 

作者机构：Staffordshire Univ Sch Engn & Adv Technol Stafford ST18 0AD Staffs England 

出 版 物：《IEE PROCEEDINGS-COMMUNICATIONS》 (IEE Proc Commun)

年 卷 期：2000年第147卷第1期

页      面：1-7页

核心收录：

主　　题：block-coded modulation schemes channel coding trellis state vector modulation coding bandwidth-efficient modulation data communication QAM constellations Mobile radio systems error-correction capabilities mobile communication channels trellis codes block codes decoding complexity error correction codes efficient data transmission decoding BCM quadrature amplitude modulation mobile radio trellis decoders simulation results recursive method Codes 

摘      要：Block-coded modulation (BCM) combines bandwidth-efficient modulation techniques with error-correction capabilities to allow efficient data transmission over mobile communication channels. The main shortcoming of BCM is the complex decoding process for which, until today, mainly suboptimum decoding methods are used, because existing approaches for trellis decoders are limited to a small subset of possible BCM schemes. The authors address this shortcoming by introducing a new technique for the construction of trellis decoders for arbitrary BCM schemes. This technique is based on a new approach for the calculation of the trellis state vector and a computationally efficient recursive method for the construction of the trellis. A large number of simulation results for BCM schemes with various QAM constellations are presented, and comparisons in terms of performance and decoding complexity allow the formulation of guidelines for the choice of efficient coding schemes.