Iterative Soft Interference Cancelation for HSPA Uplink

Author

Zeng, Wei ; Sambhwani, Sharad ; Zhang, Wei ; Wegrzyn, J. Krzys

Author_Institution

Qualcomm Inc., San Diego, CA, USA

fYear

2010

fDate

6-9 Sept. 2010

Firstpage

1

Lastpage

5

Abstract

Interference cancelation (IC) has been well studied in literature as a potential capacity approaching scheme for uplink code-division multiple-access (CDMA) systems. With the advance of silicon technology, it is becoming implementationally feasible. In this paper, we study a soft IC algorithm which could be iteratively concatenated with Turbo decoding. The algorithm only relies on a conventional single user Rake receiver. We study the IC efficiency as well as optimal soft decision methods. We compare different types of add-back operations between iterations. Finally we provide both link level as well as system level simulation results.

Keywords

code division multiple access; interference suppression; radio receivers; turbo codes; HSPA uplink; Rake receiver; iterative soft interference cancelation; optimal soft decision methods; turbo decoding; uplink code-division multiple-access systems; Channel estimation; Decoding; Estimation; Integrated circuits; Interference; Iterative decoding; Multiaccess communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference Fall (VTC 2010-Fall), 2010 IEEE 72nd

Conference_Location

Ottawa, ON

ISSN

1090-3038

Print_ISBN

978-1-4244-3573-9

Electronic_ISBN

1090-3038

Type

conf

DOI

10.1109/VETECF.2010.5594586

Filename

5594586