On MU-MIMO Precoding Techniques for WiMAX

Abstract

Additional information is available at the end of the chapter http://dx.doi.org/10.5772/56034 . IntroductionFuture wireless communication systems will require reliable and spectrally efficient transmission techniques to support the emerging high-data-rate applications. The design of these systems necessitates the integration of various recent research outcomes of wireless communication disciplines. So far, the most recent tracks of investigations for the design of the spectrally efficient system are multiple antennas, cooperative networking, adaptive modulation and coding, advanced relaying and cross layer design. [ , ]. The main objective of this chapter is to provide a comprehensive overview of various MIMO Techniques and critical discussion on the recent advances in Multi-user MIMO precoding design and pointing to a new era of the precoding application in WiMAX systems.The chapter opens with the basic preliminaries on MIMO channel characterization and MIMO gains in section . This is followed by theoretical overview of precoding for MU-MIMO channel in section . Section describes a new precoding method and numerical simulation stressing the importance of the proposed precoding in the WiMAX context. Section concludes the chapter.

Evaluation of Cell Coverage Percentage of Millimeter Waves Propagation for the 5 th Generation Cellular System

“…Where: 𝐑 represents the cellular system's upper-bound data rate, 𝐦 represents the system's spatial multiplexing gain factor, which increased with the use of multiple antennas [16,17], 𝐧 is the system load factor, which reduced with the increase in network densification. 𝒘 Represents the total bandwidth or the system allocated spectrum and 𝐒, 𝐍, 𝐈 represent the desired signal power, noise power and total interference power.…”