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Notation Ic PE R RA R R. RA S W.. L G L. K L 11 G B Parameter Carrier frequency Transmitter power Data (bit) rate Chip rate Channel bit rate Walsh waveform rate Walsh chip rate One user's received power Spread-spectrum bandwidth Error correcting code rate Path loss Transmitting Antenna Gain Receiver figure of merit Small-scale fuding loss Other losses Boltzman constant Link Margin The number of supported users per cell Processing Gain Bit-error probability Nonsynchronous interference factor Voice activity factor Outer-cell interference factor Interference power Interference power spectral density Received power-to-interference power spectral den sity ratio Energy per bit-to-Noise power spectral density ratio Required Energy per bit-to-Noise power spectral density ratio Energy per bit-to-Interference power spectral density ratio Energy per bit-to-Noise and Interference power sper tral density ratio Spread spectrum chip energy-to-interference power spectral density ratio Channel bitergy-to-interference power spectral density ratio Walsh waveform energy-to-interference power spec tral density ratio Walsh chip energy-to-Interference power spectral density ratio Table 1: Table of notations G H. 1 1. N.T. - 7. A direct-sequence spread-spectrum system uses QPSK modulation for transmitting data. It is required that the bit-error probability (P) be 10-5 and that chip energy-to-interference power spectral density ratio, Ech/1.