Performance of Large CDMA Random Access Systems with Retransmission Diversity over Fading Channels

The random access systems, exploiting retransmission diversity (RD), over large random spreading CDMA channel subject to fading is investigated, under the assumption of infinite number of users and infinite spreading gain but with their ratio converging to a constant. The SIR, throughput and spectrum efficiency are analyzed. Simulation and numerical results show that RD exploitation can significantly increase the throughput and spectrum efficiency in channels both with and without fading.

[1]  David Tse,et al.  Fundamentals of Wireless Communication , 2005 .

[2]  Yi Sun.  Spectral Efficiency and Optimal Medium Access Control of Random Access Systems over Large Random Spreading CDMA , 2009, IEEE Transactions on Communications.

[3]  David Tse,et al.  Linear Multiuser Receivers: Effective Interference, Effective Bandwidth and User Capacity , 1999, IEEE Trans. Inf. Theory.

[4]  Shlomo Shamai,et al.  The impact of frequency-flat fading on the spectral efficiency of CDMA , 2001, IEEE Trans. Inf. Theory.

[5]  Shlomo Shamai,et al.  Spectral Efficiency of CDMA with Random Spreading , 1999, IEEE Trans. Inf. Theory.

[6]  Yi Sun,et al.  Multiuser detection for packet-switched CDMA networks with retransmission diversity , 2004, IEEE Transactions on Signal Processing.

[7]  Dipankar Raychaudhuri,et al.  Performance Analysis of Random Access Packet-Switched Code Division Multiple Access Systems , 1981, IEEE Trans. Commun..

[8]  Venkat Anantharam.  The stability region of the finite-user slotted ALOHA protocol , 1991, IEEE Trans. Inf. Theory.

[9]  Ali N. Akansu,et al.  Performance of CDMA random access systems with packet combining in fading channels , 2003, IEEE Trans. Wirel. Commun..

[10]  Giuseppe Caire,et al.  The throughput of some wireless multiaccess systems , 2002, IEEE Trans. Inf. Theory.

[11]  Jamie S. Evans,et al.  Large system performance of linear multiuser receivers in multipath fading channels , 2000, IEEE Trans. Inf. Theory.

[12]  Dario Pompili,et al.  A CDMA-based Medium Access Control for UnderWater Acoustic Sensor Networks , 2009, IEEE Transactions on Wireless Communications.

[13]  Xiaodong Wang,et al.  Large-system performance analysis of blind and group-blind multiuser receivers , 2002, IEEE Trans. Inf. Theory.

[14]  Yi Sun,et al.  Retransmission Diversity in Large CDMA Random Access Systems , 2007, IEEE Transactions on Signal Processing.

[15]  Subrata Banerjee,et al.  Network-assisted diversity for random access wireless networks , 2000, IEEE Trans. Signal Process..

[16]  Lang Tong,et al.  Multipacket reception in random access wireless networks: from signal processing to optimal medium access control , 2001, IEEE Commun. Mag..

[17]  Bernard Fino,et al.  Multiuser detection: , 1999, Ann. des Télécommunications.

[18]  Behrouz Farhang-Boroujeny,et al.  Enhancing the Performance of Random Access Networks with Random Packet CDMA and Joint Detection , 2008, EURASIP J. Adv. Signal Process..

[19]  James L. Massey,et al.  The collision channel without feedback , 1985, IEEE Trans. Inf. Theory.

[20]  Symeon Papavassiliou,et al.  An analytical framework for the design and performance evaluation of realistic Aloha-CDMA systems , 2004, IEEE Transactions on Wireless Communications.