A Novel Approach for Random Interleavers in IDMA System

نویسندگان

  • AMINA JAMEEL
  • IMTIAZ AHMAD KHOKHAR
  • M. N. JAFRI
  • RAJA IQBAL
  • AHMAD RAZA
چکیده

Interleave Division Multiple Access (IDMA) is a multiuser scheme which enables user separation on the basis of interleavers. Interleaver design can allow the IDMA system to approach near Shannon limits of channel capacity. Interleaver combats against Intersymbol Interference (ISI), channel fading and all sorts of noises. In addition, interleavers provide security to the system users. Designing the random interleaver provides a solution for all impairments but they are generally considered computationally heavy. In this paper, an efficient approach has been developed for design of user specific random block interleavers. This design approach reduces the complexity for developing interleaving patterns and is computationally economical. Key-Words: Interleavers, Random Interleavers, Multiuser Detection, ISI, MAI, IDMA.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Performance Improvement of Idma Scheme Using Chaotic Map Interleavers for Future Radio Communication

In this paper, chaos based interleavers are proposed for the performance improvement of Interleave Division Multiple Access (IDMA henceforth) for future radio communication (FRC) requirements. ‘IDMA’ can be mean as the modified case of direct sequence code division multiple access (DS-CDMA) with the same spreading sequences and user specific interleavers for distinguishing the users in multi-us...

متن کامل

Survey on Interleavers in IDMA System

In recent days, a new multiple access system called interleave division multiple access (IDMA) has provide greater attention to provide interleavers. A review of IDMA technology provided in communicating system based on different types of interleavers. This paper provides a study of IDMA technique with random interleaver, helical interleaver, tree based interleaver, prime interleaver, algebraic...

متن کامل

Structural Reduction in Front End Memory Requirement of Tree Based Interleaver Method Using the Concept of Invert Tree Based Interleaver in Multiuser Interleave Division Multiple Access Scheme

Interleave division multiple access (IDMA) scheme, uses interleavers for user separation. The selection of interleaver along with optimum design methodology for IDMA system leads to satisfactory results. An efficient interleaver must be easy to generate and should require low memory along with low correlation among interleavers. Existing Tree based interleaver has distinct advantage of low comp...

متن کامل

Performance of IDMA system with Optimal Spreading Mechanism and Tree Based Interleaver

IDMA is being thought as a strong candidate for radio access in cellular mobile communication systems. It is attractive for wireless access because of its numerous advantages over TDMA, FDMA and CDMA. The InterleaveDivision Multiple-Access (IDMA) scheme is known for property of orthogonality amongst its user-specific interleavers. The interleavers are, therefore, referred has the heart of IDMA ...

متن کامل

Correlation Based Analysis of Master Random Interleaver and Tree Based Interleaver

In this paper we consider the design of practical interleavers for interleaver division multiple access (IDMA) systems. A set of interleavers is considered to be practical if it satisfies two criteria one it is easy to generate (i.e., the transmitter and receiver need not store or communicate many bits in order to agree upon an interleaver), and second no two interleavers in the set “collide”. ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2007