Performance of 3GPP high speed downlink packet access (HSDPA)

High speed downlink packet access (HSDPA) technology was standardized for 3GPP W-CDMA release-5. HSDPA includes advanced techniques such as adaptive modulation and coding (AMC), hybrid ARQ (HARQ), and fast scheduling. HSDPA can deliver a 3/spl times/ increase in sector and a 6/spl times/ increase in user throughput for some traffic models. Additionally HSDPA can support almost a 4/spl times/ increase in the number of users compared to UMTS release-99 for the same service. With advanced receivers, HSDPA can support broadband quality service with 60 users per site. This paper provides an overview of the physical layer aspects of HSDPA and discusses the improvements in sector and user throughput (with respect to release-99 UMTS) resulting from HSDPA with joint scheduling and resource allocation.

[1]  Brian K. Classon,et al.  Incremental redundancy for evolutions of 3G CDMA systems , 2002, Vehicular Technology Conference. IEEE 55th Vehicular Technology Conference. VTC Spring 2002 (Cat. No.02CH37367).

[2]  Brian K. Classon,et al.  Performance of coded higher order modulation and hybrid ARQ for next generation cellular CDMA systems , 2000, Vehicular Technology Conference Fall 2000. IEEE VTS Fall VTC2000. 52nd Vehicular Technology Conference (Cat. No.00CH37152).

[3]  Kenneth A. Stewart,et al.  MMSE equalization for UMTS HSDPA , 2003, 2003 IEEE 58th Vehicular Technology Conference. VTC 2003-Fall (IEEE Cat. No.03CH37484).

[4]  David Chase,et al.  Code Combining - A Maximum-Likelihood Decoding Approach for Combining an Arbitrary Number of Noisy Packets , 1985, IEEE Transactions on Communications.

[5]  Amitava Ghosh,et al.  Incremental redundancy (IR) schemes for W-CDMA HS-DSCH , 2002, The 13th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications.

[6]  Colin D. Frank,et al.  Control channel design for high speed downlink shared channel for 3GPP W-CDMA, Rel-5 , 2003, The 57th IEEE Semiannual Vehicular Technology Conference, 2003. VTC 2003-Spring..