Statistical Properties and Channel Capacity
of the 3D Massive MIMO GBSM
At the transmitter, adaptive modulation is separately implemented on OFDM subchannels in V-BLAST system and Alamouti coding system according to the channel state information (CSI) fed back from the receiver, where power and bits are allocated based on the idea of maximizing the channel capacity
. Then MIMO scheme with higher modulation order is determined as the proper one.
(iv) Compared to [13,14,16], we consider in this paper a summary for a cooperative communication in PLC systems where we propose to evaluate the channel capacity
and ABER performances by varying the relay position for the two considered scenarios for OFDM-based two-hop relaying PLC-AF and PLC-DF systems.
Firstly, the variations of SNR and channel capacity
with communication distance R are investigated.
The channel transfer probability matrix is used to calculate the channel capacity
: solve the equations Pm = n, where m is the column vector:
Numerous researchers have worked on the study of channel capacity
over different fading channels.
The simplified channel capacity
loss of a 2 x 2 MIMO system can be evaluated by using the following equation, given in [9, 12]:
equations are derived for different propagation scenarios in section III.
Through the analysis on the channel capacity
and the condition number of matrix as well as other characteristic parameters, comparative analysis on the changes of channel characteristics under different parameters has been made, namely, the different antenna layouts, different transmission distance, different positions of diffuser, and so on.
The effect of the antenna directionality to 60 GHz channel capacity
is studied in .
Also a most vital and advantageous utilization of relay node placement in wireless network is Network Capacity Enhancement by improving the channel capacity
Based on these investigations, we propose antenna designs comprising of two-and eight-element antennas that achieve the highest MIMO channel capacity
compared to their counterpart multi-antenna structures.