FU Hai-yang, CHEN Ji-jiang, CAO Shi-ke, et al. Study on the MIMO System and Wireless Channel Capacity[J]. Acta Electronica Sinica, 2011, 39(10): 2221-2229.
DOI:
FU Hai-yang, CHEN Ji-jiang, CAO Shi-ke, et al. Study on the MIMO System and Wireless Channel Capacity[J]. Acta Electronica Sinica, 2011, 39(10): 2221-2229.DOI:
Study on the MIMO System and Wireless Channel Capacity
multiple-input multiple-output (MIMO) theory tries to derive the formula of wireless channel capacity (WCC)
which is proportional to the number of transmitting and receiving antennas in MIMO system.As multi-antenna is used in MIMO system to transmit signals with the same carrier frequency in the same time
one physical channel in MIMO system will contain multi-virtual independent Rayleigh fading channel.So
the definition in MIMO theory for the independent Rayleigh fading channel is most possibly to be invalid.This will lead space division multiplex (SDM) to be difficult to be realized
and the derived WCC formula in mathematics to be difficult to be established.Moreover
the directional transmission beams with uncertain directions are employed in the MIMO system.The interference among those transmitting signals can not be avoided
which would form a number of blind spots of radio coverage and an unreasonable wireless communication system.In this paper
the above views are firstly proved by mathematical analysis and the simulation of the transmitting radio beam produced by multi-antenna.Then
an SHPCA system is proposed
in which phase-controlled antenna array is used to produce a narrow directional radio beam with very high power efficiency to form SDM.Finally
the WCC formula for SHPCA system is presented in the paper
and its capacity is proportional to the numbers of antennas and SDM.It has higher efficiency for that WCC formula than Shannon formula.