Published Paper Details:

Millimeter wave (MM Wave) MIMO can possible use hybrid analog and digital precoding, that uses atiny low variety of RF chains to cut back the energy consumption related to mixed signal parts like analog-to-digital parts to not mention baseband process quality. However, most hybrid precoding techniques think about a totally connected design requiring an outsized variety of part shifters, That is additionally energy-intensive. During this paper, we tend to concentrate on the additional energy economical hybrid precoding with subconnected design, and propose a sequential interference cancelation (SIC)-based hybrid precoding with near-optimal performance and low quality. Impressed by the concept of set on for multiuser detection, we tend to 1st propose to decompose the whole possible rate optimization downside with nonconvex constraints into a series of easy subrateoptimisation issues; every of that solely considers one subantenna array. Then, we tend to prove that increasing the possible subrate of every subantenna array is similar to merely seeking a precoding vector sufficiently shut (in terms of geometrician distance) to the free best answer. Finally, we tend to propose a low-complexity formula to appreciate SIC-based hybrid precoding, which may avoid the requirement for the singular price decomposition (SVD) and matrix operation. Quality analysis shows that the quality of SIC-based hybrid precoding is simply concerning 100 percent as advanced as that of the recently planned spatially distributed precoding in typical mmWave MIMO systems. Simulation results verify that SIC-based hybrid precoding is near-optimal and enjoys higher energy potency than the spatially distributed precoding and also the absolutely digital precoding.