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Consider a CDMA cellular telephone system designed to meet a standard similar to IS-95, with the following modifications. The spread-spectrum chip rate is 10.24 Mchips/s, and the data rate is 20 kbits/s. The reverse link uses a 256-ary Walsh wave- form for modulating the rate coded data, requiring an E/I, of 6 dB. Find the values of the following received power-to-interference spectral density and energy-to- interference spectral density parameters: P/Io, E/I, E/I, Ewch/Io, and Ech/Io. Also. find the values of the following rates: R., Rw, and Rwch, where c, w, wch, and ch repre- sent channel bit, Walsh waveform, Walsh chip, and spread-spectrum chip, respec- tively. What is the processing gain, and how many spread-spectrum chips correspond to one Walsh chip?

Consider a CDMA cellular telephone system designed to meet a standard similar to IS-95, with the following modifications. The spread-spectrum chip rate is 10.24 Mchips/s, and the data rate is 20 kbits/s. The reverse link uses a 256-ary Walsh wave- form for modulating the rate coded data, requiring an E/I, of 6 dB. Find the values of the following received power-to-interference spectral density and energy-to- interference spectral density parameters: P/Io, E/I, E/I, Ewch/Io, and Ech/Io. Also. find the values of the following rates: R., Rw, and Rwch, where c, w, wch, and ch repre- sent channel bit, Walsh waveform, Walsh chip, and spread-spectrum chip, respec- tively. What is the processing gain, and how many spread-spectrum chips correspond to one Walsh chip?

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Consider a CDMA cellular telephone system designed to meet a standard similar to IS-95, with the following modifications. The spread-spectrum chip rate is 10.24 Mchips/s, and the data rate is 20 kbits/s. The reverse link uses a 256-ary Walsh wave- form for modulating the rate coded data, requiring an E/I, of 6 dB. Find the values of the following received power-to-interference spectral density and energy-to- interference spectral density parameters: P,/Io, Ello, EwIo, EwchIo, and Ech/Io. Also. find the values of the following rates: R., Rw, and Rwch, where c, w, wch, and ch repre- sent channel bit, Walsh waveform, Walsh chip, and spread-spectrum chip, respec- tively. What is the processing gain, and how many spread-spectrum chips correspond to one Walsh chip?
Transcribed Image Text:Consider a CDMA cellular telephone system designed to meet a standard similar to IS-95, with the following modifications. The spread-spectrum chip rate is 10.24 Mchips/s, and the data rate is 20 kbits/s. The reverse link uses a 256-ary Walsh wave- form for modulating the rate coded data, requiring an E/I, of 6 dB. Find the values of the following received power-to-interference spectral density and energy-to- interference spectral density parameters: P,/Io, Ello, EwIo, EwchIo, and Ech/Io. Also. find the values of the following rates: R., Rw, and Rwch, where c, w, wch, and ch repre- sent channel bit, Walsh waveform, Walsh chip, and spread-spectrum chip, respec- tively. What is the processing gain, and how many spread-spectrum chips correspond to one Walsh chip?
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