Homework Answers
Actually we have to find number blocks in error then divide by total number of blocks just for reference we considered 1 block in error.
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Consider BPSK transmission that are encoded using (7,4) hamming block code. Let Pe be the BPSK...
Hamming & SECDED Code (a) For data, using 3 Hamming code parity bits determine the maximum...
Hamming & SECDED Code (a) For data, using 3 Hamming code parity bits determine the maximum number of data bits that can be protected. (b) A SECDED encoded character has been retrieved, with the hexadecimal value of 409(base16). You may assume that the SECDED parity is even. 1. Was there an error in transmission? Explain your answer. 2. If there was an error, either correct it (reporting the corrected ASCII character) or explain why it could not be corrected (Show...
Q3. In a (7,4) Hamming Code, three parity bits p1, p2, p3 are added to four...
Q3. In a (7,4) Hamming Code, three parity bits p1, p2, p3 are added to four data bits dl, d2, d3, and d4, and the coverage of each parity bit is as shown in the table below: Bit position 2 3 4 5 6 7 Encoded data bits p1 p2 di p3 d2 d3 d4 da X p1 X X X x Parity bit coverage p2 х X X p3 X X X х 1) (3 pts) Assume even parity...
Hamming & SECDED Code
Showing all your working out and intermediate steps. a) For data, using 4 Hamming code parity bits determine the maximum number of data bits that can be protected. b) A SECDED encoded character has been retrieved, with the hexadecimal value of BE4. You may assume that the SECDED parity is even. i. Was there an error in transmission? Explain your answer. ii. If there was an error, either correct it (and report the corrected data binary string) or explain why it could not be...
Please show how this answer was obtained. Problem #6 (15 points) A 12-bit hamming code was generated from an 8-bit code using the format as follows Original 8-bit value Modified 8-bit value (12-bt ham...
Please show how this answer
was obtained.
Problem #6 (15 points) A 12-bit hamming code was generated from an 8-bit code using the format as follows Original 8-bit value Modified 8-bit value (12-bt hamming code format) 10 9 C3 co The 12-bit hamming code was transmitted over a communication channel. An error may or may not have occurred during the transmission. The received 12-bit values were shown as follows: Received 12-bit value 10 Determine whether an eror had been occurred,...
Consider a (48, 36) block error correcting code used in the downlink control channel of a...
Consider a (48, 36) block error correcting code used in the downlink control channel of a cellular system. This code can correct up to 5 bit errors in a block of 48 bits. If the 48 bit blocks are buffered until 10 blocks are collected and then they are interleaved and transmitted, what is the maximum error burst size that can be tolerated and still have correct reception of the data? What is the delay incurred in buffering the data...
assume we want to send a dataword of two bits using FEC based on the Hamming...
assume we want to send a dataword of two bits using FEC based on the Hamming distance. Show how the following list of dataword/codewords can automatically correct up to a one bit error in transmission dataword-codeword 00- 00000 01- 01011 10- 10101 11- 11110
Consider a DS-BPSK spread spectrum transmitter in Figure 2. Let d(t) be a binary sequence 1101...
Consider a DS-BPSK spread spectrum transmitter in Figure 2. Let d(t) be a binary sequence 1101 arriving at a rate of 100 bps, where left most bit is the earliest bit. Let c(t) be the pseudorandom binary sequence 100110111000 with a clock rate of 300 Hz. Assuming a bipolar signaling scheme with binary 'O' and binary 'l' represented by a signal levels -l' and '+1', respectively: d(t) Binary-to-bipolar mapping Binary-to-bipolar mapping 2Pcos(211) (1) BPSK modulator P(t) VZPpt) cos(ft) (b) (c)...
The bit rate for a baseband signal is 1.544 Mb/s, and FEC at a code rate...
The bit rate for a baseband signal is 1.544 Mb/s, and FEC at a code rate of 7/8 is applied before the signal is used to modulate the carrier. Given that the system uses raisedcosine filtering with a rolloff factor of 0.2, determine the bandwidth required for: (a) BPSK, and (b) QPSK. Explain what is meant by coding gain as applied to error correcting coding. When FEC coding is used on a digital link, a coding gain of 3 dB...
Help me please! Thank you!! 1. Consider the signal set in Figure 1 for binary data...
Help me please! Thank you!!
1. Consider the signal set in Figure 1 for binary data transmission over a channel disturbed by AWGN. The noise is zero-mean and has two-sided PSD No/2. As usual, si(t) is used for the transmission of bit "0" and s2(t) is for the transmission of bit 1." Furthermore, the two bits are equiprobable. Si CC) s2(t) .A 0 Figure 1: A binary signal set, considered in Problem 1 Find and draw an orthonormal basis {фі...
Please help me these questions of "Principles of Communications" subject. Thanks in advance! Problem 2: PCM syst...
Please help me these questions of "Principles of Communications"
subject. Thanks in advance!
Problem 2: PCM system (40 points)coo h Consider a polar binary PCM system with number of bits per sample v 8 and the 4 KHz. Assumed that the channel is AWGN. voice bandwidth a) Assumed that one voice signal is transmitted using above PCM system, find the bit rate at the output of PCM transmitter and the minimum channel bandwidth. b) Assumed that 24 voice signals are...
Q3. In a (7,4) Hamming Code, three parity bits p1, p2, p3 are added to four data bits dl, d2, d3, and d4, and the coverage of each parity bit is as shown in the table below: Bit position 2 3 4 5 6 7 Encoded data bits p1 p2 di p3 d2 d3 d4 da X p1 X X X x Parity bit coverage p2 х X X p3 X X X х 1) (3 pts) Assume even parity...
Please show how this answer
was obtained.
Problem #6 (15 points) A 12-bit hamming code was generated from an 8-bit code using the format as follows Original 8-bit value Modified 8-bit value (12-bt hamming code format) 10 9 C3 co The 12-bit hamming code was transmitted over a communication channel. An error may or may not have occurred during the transmission. The received 12-bit values were shown as follows: Received 12-bit value 10 Determine whether an eror had been occurred,...
Consider a DS-BPSK spread spectrum transmitter in Figure 2. Let d(t) be a binary sequence 1101 arriving at a rate of 100 bps, where left most bit is the earliest bit. Let c(t) be the pseudorandom binary sequence 100110111000 with a clock rate of 300 Hz. Assuming a bipolar signaling scheme with binary 'O' and binary 'l' represented by a signal levels -l' and '+1', respectively: d(t) Binary-to-bipolar mapping Binary-to-bipolar mapping 2Pcos(211) (1) BPSK modulator P(t) VZPpt) cos(ft) (b) (c)...
Help me please! Thank you!!
1. Consider the signal set in Figure 1 for binary data transmission over a channel disturbed by AWGN. The noise is zero-mean and has two-sided PSD No/2. As usual, si(t) is used for the transmission of bit "0" and s2(t) is for the transmission of bit 1." Furthermore, the two bits are equiprobable. Si CC) s2(t) .A 0 Figure 1: A binary signal set, considered in Problem 1 Find and draw an orthonormal basis {фі...
Please help me these questions of "Principles of Communications"
subject. Thanks in advance!
Problem 2: PCM system (40 points)coo h Consider a polar binary PCM system with number of bits per sample v 8 and the 4 KHz. Assumed that the channel is AWGN. voice bandwidth a) Assumed that one voice signal is transmitted using above PCM system, find the bit rate at the output of PCM transmitter and the minimum channel bandwidth. b) Assumed that 24 voice signals are...
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