Maximum Total Ergodic Spectral Efficiency of Randomly-Spread Coded-CDMA with Linear Multiuser Receivers over Multipath Fading Channels

ERTUĞ Ö., ÜNAL B., BAYKAL B., YÜCEL M.

IEEE Global Telecommunications Conference GLOBECOM'03, San Francisco, CA, Amerika Birleşik Devletleri, 1 - 05 Aralık 2003, cilt.3, ss.1568-1572 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 3
  • Basıldığı Şehir: San Francisco, CA
  • Basıldığı Ülke: Amerika Birleşik Devletleri
  • Sayfa Sayıları: ss.1568-1572
  • Gazi Üniversitesi Adresli: Evet

Özet

We analyze the total ergodic spectral efficiency and sum-rates error-exponents of randomly-spread CDMA systems with diversity-combining linear multiuser receivers over time-varying frequency-selective multipath Rayleigh/Ricean fading channels. The basis of our analysis mainly being the joint/average eigenvalue density of the random cross-correlation matrices, our focus is on equal-rate/equal-energy identical users with statistically i.i.d. channels. The upper-bound ergodic spectral efficiency and the corresponding sum-rates error-exponent expressions are derived in closed-form in terms of the key system parameters for linear multiuser receivers with single-user ML decoding. The analysis sheds light onto asymptotic behaviour of channel-coded wideband CDMA systems over multipath fading channels.