Fixed-point implementation of VBLAST HSDPA services

Abstract

A b s t r a c t Sriiriihle rechniyries .fbr Highpeed Downlink Packet Access IHSDP.4) .seri'ices. rising Widehond Coiie Division Mrdtiple .4ccess IIVCDMA). LIIP currerirly being considered lqi rhe Third Geiterarion Partnership Projecr (3GPP). One of' the .sj>.yteiiis crrrrenr!v under considemiion is a Splice-Time Coding ISTC) iirchitectiire rising the Verri~iil-Bell-liibs-Lit?;rrrri-Sprrcr-Tiitie (V-BLAST/ systein on the Downlink-Siiiirerl Chunnel (DSCH). which wiil irllow simiilraneuus trunsinissiuns over multiple cIianne1.s destined ,fur 1 1 single ir.scr. Alrhorrgh link level results .for ,flat ,fading channels inilicorr .sign$cmt pei:formance adviinrirges over the i.om.enrionol single iinrenno .sy.ctein.s. if is less .sr~cces.$i/ ,for ,~~eyrienc~~-\-eIe~tivt. ./;ri/iiig. Curre.sponding inethods of riesign i i~~p i e~i i r~~r~r r i~~n ore oiro heiiig deveIo/mi rising techniques s i r c h (1. 7 Si:.sreni-on-ii-Chii, (SoCi. Digifirl Signal Processors IDSPs). ~r n d Field Progririir Girrr .4rray.s (FPGA). I n this p q l w we pre.se,ir ( I JJ~t~/uI7llllllCe c o i n p r i s o n ,fur hufh $Xed ond,/looriiig poinr DSP iniplemcntiitions ,for the pruposed V-BL.4 S T sj:.sreiii.