Title :
Accurate DS-CDMA Packet-Error Rate Analysis in Rayleigh Fading
Author :
Hamdi, Khairi A.
Author_Institution :
Sch. of Electr. & Electron. Eng., Manchester Univ.
fDate :
3/1/2007 12:00:00 AM
Abstract :
We present new packet-error rate (PER) analysis for both slotted and unslotted direct-sequence spread-spectrum packet communication systems in a slow Rayleigh fading environment. Based on the accurate improved Gaussian approximation, we derive closed-form expressions for the cumulative probability distribution function of the signal-to-interference-plus-noise ratio in binary phase-shift keying (PSK), quadratic PSK, and differential PSK-based code-division multiple-access (CDMA) systems having different types of chip waveforms including bandwidth-efficient waveforms. This leads to new accurate unified expressions for the PERs that account for bit-to-bit error dependence, which are valid for packets with unequal power levels. These new results facilitate accurate computation of the throughput performance of CDMA-based ALOHA local radio networks
Keywords :
Rayleigh channels; bandwidth allocation; code division multiple access; differential phase shift keying; packet radio networks; quadrature phase shift keying; spread spectrum communication; statistical distributions; ALOHA local radio networks; DS-CDMA packet-error rate; Gaussian approximation; Rayleigh fading; bandwidth efficient waveforms; binary phase-shift keying; code division multiple-access; cumulative probability distribution function; differential PSK; direct-sequence spread-spectrum systems; packet communication systems; quadratic PSK; signal-to-interference-plus-noise ratio; Closed-form solution; Computer networks; Gaussian approximation; Multiaccess communication; Phase shift keying; Probability distribution; Radio network; Rayleigh channels; Spread spectrum communication; Throughput; Multiple-access (MA) communications; Rayleigh fading channels; packet communication systems; spread spectrum communications;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2007.892456
