TAILIEUCHUNG - A proposed model of mimo channel in realistic environment

In a realistic transmision environment including rich scatterers, the question is how to simplify the channel matrix in realistics. The paper would like to divide the space into some bins that help the transmitter to know what the bin’s directions having the greater transmission gains and beam on them. This is most important for the transmitter to focus beams on the good bins in the real fast changing transmission environments. | Kỹ thuật điều khiển Điện tử A PROPOSED MODEL OF MIMO CHANNEL IN REALISTIC ENVIRONMENT Tran Hoai Trung Abtract In a realistic transmision environment including rich scatterers the question is how to simplify the channel matrix in realistics. The paper would like to divide the space into some bins that help the transmitter to know what the bin s directions having the greater transmission gains and beam on them. This is most important for the transmitter to focus beams on the good bins in the real fast changing transmission environments. The author uses Matlab to prove the formula of of new channel matrix to be true in some scenarios for scatterers. Keywords Wireless communication MIMO channel matrix. 1. PROBLEM If the distribution of scatterers is random 1 3 it is difficult to make decision on what directions are transmitted. Some papers 2 uses a Rayleigh environment or 4 uses a multipath environment including some discrete physical paths for finding the optimum beam directions however they are the special cases of the realistic transmission environment. The paper would like to divide the rich scatterring environment into some spatial bins and the transmitter can transmit and allocate power on some productive directions on these bins when it knows the proposed channel matrix. The formula for calculating the matrix at the receiver which is fed back to the transmitter can be easier if dividing unlimited transmission space in to limited number of spatial bins. 2. AN EXPRESSION OF MIMO CHANNEL MODEL The realistic transmission environment is described as Figure 1. Figure 1. The rich scattering transmission environment. 36 Tran Hoai Trung A proposed model of MIMO channel in realistic environment. Nghiên cứu khoa học công nghệ For the realistic environment the channel matrix H is defined as 5 and is included in the relationship between input signal vector x and the output signal y y Hx JT JR H J Íg Tt r aT tt aR r drdD 1 where G rR rT is the gain of physical path with the .

• Cơ khí - Chế tạo máy
• Proposed model of mimo channel in realistic environment
• Mimo channel in realistic environment
• MIMO channel matrix
• The real fast changing transmission environments