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1. It is suggested that full diversity gain can be achieved over a Rayleigh faded MISO channel by simply transmitting the same symbol at each of the transmit antennas simultaneously. Is this correct? 2. An L × 1 MISO channel can be converted into a time diversity channel with L diversity branches by simply transmitting over one antenna at a time.
1. In this way, any code designed for a time diversity channel with L diversity branches can be used for a MISO (multiple input single output) channel with L transmit antennas. If the code achieves k-fold diversity in the time diversity channel, how much diversity can it obtain in the MISO channel? What is the relationship between the minimum product distance metric of the code when viewed as a time diversity code and its minimum determinant metric when viewed as a transmit diversity code?
2. Using this transformation, the rotation code can be used as a transmit diversity scheme. Compare the performance of this code and the Alamouti scheme in a 2 × 1 Rayleigh fading channel, using BPSK symbols. Which one is better? How about using QPSK symbols?
If a zener diode has a breakdown voltage of 8[V], find the dielectric strength of the semiconducting material if it is assumed that the entire voltage is dropped across the pn junction, which has width 0.3[μm]. Assume that E is uniform across the ..
Detemiine the range of values of K for the system to be stable and obtain the characteritic equation
Design a VDHL file controller to operate two separate sets of three traffic light signals, one for each direction. Use eight LEDs as shown in to represent the outputs. The Time in This State can be met in several ways.
what is the impedance of a resistor r in parallel with a series combination of a capacitor c and an inductor l?
A pipe of inner radius 4 cm, outer radius 6 cm, and infinate length is centered on the z-axis. Charge is evenly distributed within the wall of the pipe in the amount of 16 coulombs per meter length.Find and Plot the electric feild density as a fun..
with general block diagrams, show how to obtain the following frequencies from a 10 MHz clock by using single flip-flop, modulus-5 counters, and decade counters for 5MHz 2.5MHZ 2MHz 1MHz 500kHz 250 kHz 62.5 kHz 40 kHz 10 kHz 1 kHz
Consider a GaAs MESFET. When the device is biased in the saturation region, we find that Id = 18.5µa and Vgs=.35 V and Id=86.2µa at Vgs=.5V. Determine the conduction parameter k and the threshold voltage Vtn.
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Explain conditions for Rigid-Body Equilibrium with relevant diagrams.
A M-bit thermometer code for the number k consists of k 1's in the least significant bit positions and M-k 0's in the more significant bit positions. A binary-to-thermometer code converter has N inputs and 2^N-1 outputs.
Suppose that the type of key in a hashing application you are implementing is String. Design, implement, and test a hash function that converts a key to a hash value. Assume that the size of the hash table is a prime number.
A 10 ohm resistor carries a current of 5 amps. How much energy, in joules, will be disapated in the form of heat during a period of 6 seconds
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