EE620: MIMO Wireless Communications Homework 3
(due on March 31, before the class)
1. (1 point) Determine the normalized coding gain of the following set of space-time signals: 11 1 1 C0 = , C1 = , 1 1 11 C2 = 1 1 1 1 , C3 = 1 1 1 1 .
2. (1 point) Determi
EE 620: MIMO Wireless Communications Solutions for Homework #2:
(1) We have two ST signals. The spectral efficiency of the set of two ST signals is
R=
log 2 L log 2 2 = = 0.5 bit/s/Hz T 2
(2) Mt=2, Mr=1. At time t, the signal received at receiver is given
EE620: MIMO Wireless Communications Homework 2
(due on Mar. 17, before the class) Consider a MIMO system with Mt = 2 transmit and Mr = 1 receive antennas. It uses a set of two ST signals: 11 1 1 C0 = , C1 = . 1 1 1 1 The transceiver signal can be modeled
EE620: MIMO Wireless Communications Homework 4
(due on April 21, before the class)
1. A MIMO system with M t = 4 transmit antennas uses the following space-time code
0 x 0 x3 , * 0 x1 x2 * * x3 x2 x1 where x1 , x2 and x3 can be chosen from arbitrary signa
EE620: MIMO Wireless Communications Homework 1
(due on Feb. 18, before the class)
A vehicle is moving at a constant speed of 60 miles per hour (96km/h). A user in the vehicle receives a 900MHz band signal from a base station. Assume that the fading channe
EE 620: MIMO Wireless Communications Solutions for Homework #1:
(1) Maximum Doppler frequency and normalized maximum Doppler frequency 96 10 3 m 80 v = 96 km / h = = m/s 3600 s 3 c 3 108 1 = = =m 6 f c 900 10 3 v 80 / 3 f D ,MAX = = = 80 Hz 1/ 3 1 1 f D ,
EE620: MIMO Wireless Communications
Assignment #1
(Due on Feb. 7, before the class)
A vehicle is moving at a constant speed of 60 miles per hour. A user in the vehicle receives
wireless signals with carrier frequency 900MHz from a cellular base station. T