Forward Frame Error Rate
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Measurement Parameters FER Measurement Results Input Signal Requirements Key TIA/EIA-98-E Tests Using FER How is an FER measurement made? Frame Error
Frame Error Rate Wikipedia
Rate (FER) measurement is used to test the performance of a frame erasure rate wikipedia mobile station's receiver. FER measurements can only be made on the forward traffic channel (F-Traffic) for
Frame Error Rate Matlab
IS-95 system or forward fundamental channel (F-FCH) for IS-2000 system and a call must be connected with a loopback service option (such as SO2, SO9, SO55 or frame error rate and bit error rate SO75). The forward supplemental channel (F-SCH) for IS-2000 system is measured using TDSO FER measurement (see TDSO Frame Error Rate Measurement Description ). During an FER measurement, the test set sends a sequence of frames to the mobile station. Each frame contains CRC (Cyclic Redundancy Code) bits, which provide frame quality indicator and allow the frame error rate calculation mobile station to verify that it has correctly decoded a frame. The mobile station is put into a loopback service option and makes its best attempt to decode each received frame sent from the test set. Once the mobile station determines the CAT_TYPE that specifies whether the frame received is a good frame, bad frame, frame erasure, or a frame blanked by signaling, the mobile station encodes and re-transmits the frame, with the first two bits replaced with the CAT_TYPE information, back to the test set. The test set compares each received frame to the corresponding frame that was sent and validates the CAT_TYPE information, then determines the measurement results (see FER Measurement Results ). The test set keeps a running count of the measured frames and the number of frames that contain bit errors. Intermediate measurement results are periodically available on the front panel display, but are not available programmatically through the GPIB interface. Confidence Level Testing Confidence level testin
& FER? I want to send bit streams in frames and then calculate the channel capacity. I want the capacity in general form not only for AWGN channels. I wrote the codes for calculating FER and BER in matlab, then I simulated it for different modulations (Bpsk,Qpsk, 8Psk) but now
Bit Error Rate Calculation
I want to calculate the channel capacity and through put, and I was looking for a specific bit error rate vs snr formula between BER,FER ,PER and capacity. I found these two formula: 1- C = W*log2(1 + BER_gap*SNR); (as Talha Faizur Rahman mentioned it ) 2-
Packet Error Rate
C = (Nd* Nb*Rfec*Rstc/Ts)* (1-PER) (in this paper http://arxiv.org/abs/1002.1954) but still I am looking for a way to calculate C from FER. I think it shoul be something like : C = Nominal-Rate (1- FER) but I don't know which parameters should http://rfmw.em.keysight.com/rfcomms/refdocs/cdma2k/cdma2000_meas_fer_desc.html be considered in the nominal rate Topics Wireless Communications Ă— 960 Questions 31,402 Followers Follow May 28, 2014·Modified May 28, 2014 by the commenter. Share Facebook Twitter LinkedIn Google+ 1 / 0 Popular Answers Abdelhalim Zekry · Ain Shams University Dear Sadaf, The channel capacity by definition is the maximum bit rate that can be transmitted across the channel with a specific bit error ratio. So if you have the frame error rate ref, i.e., the ratio of frames in error to the total https://www.researchgate.net/post/What_is_the_relationship_between_Channel_capacity_FER number of frames ref, you can calculate bit error rate reb by just dividing the frame error rate ref by the number of bits per frame Nf assuming one bit error in the frame on the average. That is reb= ref / Nf for one bit error in the frame on the average. Then you can calculate the ref max allowed= reb max allowed x Nf So you start with small frame rates and increase it gradually while observing the frame error rate till it becomes equal than the maximum allowed frame error rate rf max allowed. This is then the channel capacity in frames per seconds. You can get the maximum bit error rate which is the channel capacity C. C=rb max= rf x Nf. Where rf is the frame rate and rb is bit rate. o the whole problem i a matter of definition. wish you success. Jun 1, 2014 All Answers (14) Hossein Soleimani · Isfahan University of Technology Dear Sadaf forward error correction(FEC) bits are some bits which are added to bit-stream to protect the original bits against channel noise. for example, we send 7 bits instead of original 4 bits, i.e 3 bits are added. Therefore, the number of raw bits we can send in a second decrease, i.e we can not use all channel capacity to send our original data. As a result the most challenging issue in channel coding is to find a coding method which are robust against noise while it's perfor
Link Frame Erasure Rate (FER) in CDMA If this is your first visit, be sure to check out the FAQ by clicking the link http://www.telecomsource.net/showthread.php?1673-Forward-Link-Frame-Erasure-Rate-(FER)-in-CDMA above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. Dear Guest, 20,000 Telecom engineers cant be wrong.Just Join Today Most Popular Telecom Forum. Click Here to Register Register Please Check Please Check New Rules for Download in error rate Announcement Area. Please Check for New Rules. You may have to Click New Rules for Downlaod Results 1 to 3 of 3 Thread: Forward Link Frame Erasure Rate (FER) in CDMA Thread Tools Show Printable Version Subscribe to this Thread… Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode 03-30-2012,03:09 PM #1 shisenchi View Profile View Forum Posts View frame error rate Blog Entries Level 3 Users Join Date Nov 2011 Posts 518 Post Thanks / Like Thanks (Given) 11 Thanks (Received) 238 Likes (Given) 1 Likes (Received) 98 Dislikes (Given) 0 Dislikes (Received) 0 Credits 11,643 Rep Power 8 Forward Link Frame Erasure Rate (FER) in CDMA The Frame Erasure Rate (FER) is the fundamental measure of CDMA voice quality. FER is directly dependent on the error-correction capabilities of the vocoder. Once the number of erroneous frames in an incoming data stream surpasses the number of frames the vocoder can correct, the vocoder will “erase” any new erroneous frames from the data. Therefore, FER can be defined as the rate at which uncorrected frames are erased from the received data stream. IS-95 CDMA systems are designed with a target FER of 1%. This target is assumed to provide the desired voice quality. However, a FER greater than 5% still yields an acceptable voice quality in mobiles with a 13 kbps vocoder. Likewise, a FER greater than 3% still yields acceptable voice quality in systems with an 8 kbps vocoder.Similar Threads: Forward
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