Multicarrier Communications

Multicarrier Communications will provide a review and analysis of the principles of various spread-spectrum systems with an emphasis on the principles of code-division multiple-access (CDMA) communications. Four basic spread-spectrum and four hybrid spread-spectrum schemes are highlighted. It also comprehensively looks at the multicarrier CDMA communications as well as issues related to the theory and implementation of multicarrier CDMA. The multicarrier schemes considered in this book include the orthogonal frequency-division multiplexing (OFDM), frequency-domain spread multicarrier CDMA (MC-CDMA), various types of multicarrier direct-sequence code-division multiple-access (MC DS-CDMA), frequency-hopping MC DS-CDMA and time-hopping MC DS-CDMA. Multicarrier Communications provides in-depth analysis of the performance of various multicarrier CDMA schemes, when communicating over Gaussian or multipath fading channels. It analyzes in detail the implementation issues of multicarrier modulation/demodulation in the context of various multicarrier CDMA schemes, in addition to that in OFDM systems. Both the receiver and transmitter optimizations in various multicarrier CDMA systems are studied comprehensively and possible alternatives for solving problems are discussed. This book provides a comprehensive and in-depth discussion for the non-coherent multiuser detections, which have so far received relatively little attention but will become more and more important in ad-hoc and wireless sensor networks. Furthermore, this book deals with the application of multiple-input multiple-output (MIMO) and space-time processing in various multicarrier CDMA systems, and deals with the design of space-time multicarrier CDMA systems that are suitable for the communications environments experiencing both frequency-selective and time-selective fading. It aims to do so in a unified manner by bringing together in a coherent framework all the approaches that could be classed as multicarrier CDMA as opposed to existing books which deal pre-dominantly with OFDM type approaches.