Part 4(126-152)

126. The redundancy of the language is 0,75 and its I average is 1 bit. Calculate the number of letters in this language's alphabet?

• 32

• 16

• 8

• 64

127. The string was encoded with Hamming (7,4) code using the structure (i1, i2, i3, i4, r1, r2, r3). After a channel the error syndrome is 000. Specify the position of the error.

• i1

• r1

• no error

• r3

128. The string was encoded with Hamming (7,4) code using the structure (i1, i2, i3, i4, r1, r2, r3). After a channel the error syndrome is 001. Specify the position of the error.

• i1

• r1

• r3

• no error

129. The string was encoded with Hamming (7,4) code using the structure (i1, i2, i3, i4, r1, r2, r3). After a channel the error syndrome is 010. Specify the position of the error.

• r3

• r1

• r2

• i2

130. The string was encoded with Hamming (7,4) code using the structure (i1, i2, i3, i4, r1, r2, r3). After a channel the error syndrome is 011. Specify the position of the error.

• r4

• i1

• i4

• r1

131. The string was encoded with Hamming (7,4) code using the structure (i1, i2, i3, i4, r1, r2, r3). After a channel the error syndrome is 100. Specify the position of the error.

• r3

• i1

• r1

• r2

132. The string was encoded with Hamming (7,4) code using the structure (i1, i2, i3, i4, r1, r2, r3). After a channel the error syndrome is 101. Specify the position of the error.

• no error

• r1

• i1

• i2

133. The string was encoded with Hamming (7,4) code using the structure (i1, i2, i3, i4, r1, r2, r3). After a channel the error syndrome is 110. Specify the position of the error.

• i4

• r3

• i3

• i1

134. The string was encoded with Hamming (7,4) code using the structure (i1, i2, i3, i4, r1, r2, r3). After a channel the error syndrome is 111. Specify the position of the error.

• i4

• r2

• i2

• no error

135. This is the method for data processing for reducing errors during transmission via channel with noise.

• Error Correction code

• Uniform code

• Non-uniform code

• Optimal code